Ash Ketchum has caught many Pokémon throughout the series. Most of them are with Professor Oak, but ones are either training, released or even given away.
Ash was given Pikachu by Professor Oak as the original Kanto starter Pokemon had been taken. Originally, Pikachu would not listen to Ash and constantly shocked him. However, after accidentally angering a flock of Spearow, Pikachu had a change of heart when it saw Ash defend him. Since then, Pikachu has assisted and been very successful in many of Ash's wins and over time has adopted Ash's mannerisms. Pikachu does not want to be in its Poké Ball so it stays out all the time, often riding on Ash's shoulder or head. Pikachu's Moves: ThunderShock, Thunderbolt, Agility, Quick Attack, Thunder, Double-Edge, Tackle, Leer, Iron Tail, Volt Tackle and Electro Ball.
Froakie first appeared in Kalos, Where Dreams and Adventures Begin! where it observed Pikachu shocking Bonnie, Clemont and Ash outside the Lumiose Gym. Froakie protected Pikachu from its own Electro Ball, which had been rebounded by Wobbuffet's Mirror Coat. At the end of the episode, Froakie appeared in front of Sycamore's lab with a Poké Ball and asked Ash to catch it, which Ash did so gladly. Froakie knows Water Pulse and Bubble.
Fletchling first appeared where it swooped down to take a berry that Bonnie gave to a Dedenne. Afterwards, Froakie challenged it to a battle but Fletchling's speed and strength proved to be too much for Froakie. Froakie was finally able to land a hit on the Tiny Robin Pokémon. Ash threw a Poké Ball at it but the capture was unsuccessful. Froakie continued the battle with Fletchling and landed a hit with Water Pulse. Ash threw another Poké Ball at Fletchling and managed to catch it this time. Fletchling knows Double Team, Peck and Razor Wind.
Bulbasaur was the third Pokémon Ash caught. It had been protecting a village of Pokémon that were recovering from illnesses. Since then it became a vital part of Ash's team and won many gym and league battles for Ash. Bulbasaur has been given the choice to evolve but decided to stay at its base form. Long into his journey with Ash, Bulbasaur was called upon to stop feuds between the Pokémon in Oak's Lab and has continued to do so. It also appears to have a budding romance with May's Bulbasaur. Bulbasaur's Moves: Tackle, Vine Whip, Razor Leaf, Leech Seed, SolarBeam, Sleep Powder, Take Down and Dig.
Ash and Brock once saved a Charmander from death, and after saving it from its incompetent trainer, Brock decided that Ash should remain with it. Then, evolving from Charmeleon, Charizard didn't obey any orders that Ash gave and quite often used its flamethrower attack on Ash. However, after getting frozen in battle, Charizard started to respect Ash as Ash nursed it back to health. Since then it has been a vital powerhouse in Ash's team and has been used in several Gym, League and Frontier battles and has even held its own in battles against Entei and Articuno. It currently resides at Prof. Oak's Lab in Kanto. Charizard's Moves: Flamethrower, Leer, Rage, Skull Bash, Ember, Fire Spin, Submission, Seismic Toss, Mega Punch, Dragon Rage, Take Down, Tackle, DragonBreath, Overheat, Steel Wing, Wing Attack, Slash, and Dragon Tail.
It was Ash's seventh Pokémon in Kanto. Evolving in its first ever battle in the Indigo League, Kingler is a good strong Pokémon that Ash has fallen back on in both the Indigo and Johto leagues. However it has not seen much experience outside of those leagues. Kingler's Moves: Harden, ViceGrip, Leer, Stomp, Water Gun, Bubble, Crabhammer and Hyper Beam.
Captured after taking over a Power Plant, Muk was immediately sent to Professor Oak's Laboratory. While being there it grew incredibly affectionate and is known to hug Professor Oak on many occasions. However, past this affectionate yet slimy exterior, Muk has been used in several League battles and manages to hold its ground. As a running gag, Muk often knocks over Professor Oak when he's talking with Ash over the video-phone. Muk's Moves: Body Slam, Poison Gas and Sludge Bomb.
When he was in the Safari Zone, Ash managed to capture thirty Tauros, all of which reside at Oak's Laboratory. However Ash has used one of the Tauros on several occasions in Leagues and Frontier battles. Tauros's Moves: Fissure, Take Down, Horn Attack and Double Team.
Captured in the Orange Islands when stealing all the fruit from a small Island range, Snorlax has become a major powerhouse of Ash's, when it is awake that is. Due to its massive feeding requirements, Ash felt it better to stay at Professor Oak's, however it is still used for a number of Gym, League & Frontier battles. Also, Snorlax had defeated a Medicham, even at a Fighting disadvantage. Snorlax's Moves: Body Slam, Headbutt, Mega Kick, Mega Punch, Hyper Beam, Ice Punch, Tackle, Harden and Rest.
After evolving from Chikorita, Bayleef kept it's longing feelings for Ash which did end up getting it in trouble on several occasions. However after getting used to its size, it managed to become a vital part of Ash's team and helped win many Gym & League battles. Ash left it at Oak's when he decided to make a fresh start when he left for Hoenn.
While training for the Sinnoh League, Ash brought his Cyndaquil with many of his other Pokémon. However, Team Rocket tried to cause problems and Cyndaquil evolved in order to stop them. Quilava has numerous powerful attacks such as Flame Wheel at its disposal, showing that it has completely overcome its previous hindrances in its base form and is sure to be a powerful Pokémon within Ash's team.
Totodile was captured by Ash using his Lure Ball. Since Misty also wanted it, they decided to battle in order to determine who's it was. Ash won. Totodile has a quirky personality and really likes to dance. It has even been known to use this dancing tactic to help win battles. Ash left it at Oak's when he decided to make a fresh start when he left for Hoenn.
Noctowl is an incredibly rare Pokémon of Ash. It is a 'Shiny' Pokémon which glitters as it comes out of its Poké Ball into battle. Due to its psychic abilities, it has been used many times to find and battle Ghost Pokémon as well as the usual flying requirements that Ash utilizes. Ash left it at Oak's when he decided to make a fresh start when he left for Hoenn.
After rejoining Ash's team as a Phanpy, it evolved to help free Pikachu from Team Rocket. However even after the evolution it kept its playful personality from being a Phanpy which sometimes can cause mayhem with other younger Pokémon. Ever since it evolved, it has become a powerhouse in Ash's team winning many Frontier Battles. It now resides back in Oak's Lab during Ash's journey to Sinnoh.
After evolving during a Pokémon Ring Contest, Swellow has partaken in many of Ash's battles in Gyms and Leagues and has got a good amount of wins under its wing. Swellow was left at Oak's Lab when Ash left for his journey to Sinnoh. But Ash used Swellow, one more time, in the Sinnoh League.
After evolving from Grovyle to defend it's love interest, it lost all ability to use attacks. Eventually regaining the ability to use the attacks, Sceptile became a vital powerhouse in Ash's team which can hold its own against legendary Pokémon including Deoxys, Regirock, and Darkrai. Despite being one of Ash's best-trained Pokémon, Ash decided to leave Sceptile at Oak's Lab while he travelled to Sinnoh. Sceptile was used again to defeat a Darkrai in the Sinnoh Pokémon League.
Corphish was captured while terrorizing Dewford Island and its inhabitants. However once caught Corphish managed to tame it's terrorizing attitude and become a vitally used member of Ash's team. However whenever one of Ash's Pokémon evolves or gets a bit more attention, Corphish does get the tendency to get a bit jealous. After its tenure with Ash through Hoenn and the Battle Frontier, Corphish was left at Oak's Lab.
Torkoal was found under attack by a bunch of Steel Pokémon in the valley. When Ash arrived to rescue it, it ran off but eventually followed Ash's instructions and defeated the Steel Pokémon. It is an emotional Pokémon which has been known to burst into tears when happy. Torkoal hasn't been in many gym battles but is used in standard battles on many occasions and proves it's strength in those battles. After the Hoenn League, Ash decided to give it some time off at Oak's Laboratory.
Glalie was newly evolved when Ash entered the Hoenn League. Convinced of its power Ash used it in a number of battles where it managed to hold its own successfully. After the league was over he decided to give it a break at Oak's Laboratory.
Ash's Staraptor evolved from Staravia during a PokéRinger contest against Paul's Honchkrow. As it has evolved, it is likely to become one of the powerhouses of Ash's team and will still likely be used for long-distance searching. With it's bigger size and strength, as soon as it evolved, it learned the move Close Combat, which will be helpful for many close flying battles.
Torterra is the Grass type Pokémon of Ash's Team. After being used in a gym battle against Volkner, which got postponed, Ash's Grotle evolved during a battle with Team Rocket. With its new size and strengths, it now knows more powerful moves such as Leaf Storm in addition to the moves Energy Ball, Rock Climb & Synthesis. With these attacks at its disposal, it is sure to be a massive tank in Ash's team.
After being knocked to the brink of fainting in a battle against Barry's Empoleon, Monferno went berserk with its Blaze Ability and unleashed its full power against Team Rocket. While protecting the Pokémon, it evolved into Infernape. Infernape has many powerful attacks at its disposal such as Flame Wheel and Flare Blitz so it's set to be the powerhouse behind Ash's team. It was later used in a battle against Flint's Infernape, but lost due to its lack of experience.
Originally captured by Dawn, Buizel has always been an incredibly strong Pokémon with an aptitude for Pokémon Battles. After Zoey saw how Ash & Dawn had Pokémon that preferred the other's vocations, a trade followed. Now, Buizel is one of Ash's powerhouses with powerful moves such as Aqua Jet at its disposal. Buizel will likely be called upon often for battles.
During its Gligar stage, Gliscor was a fairly weak Pokémon, not knowing many attacks and thus not being very strong, all due to its age. However, evolving by grabbing a Razor Fang while it was falling, it has gained a lot of strength and confidence. Even after evolving though, it still wishes to battle more and still vies for Ash's approval. With powerful attacks such as Steel Wing and X-Scissor, it is sure to become a vital member of Ash's team. During a battle with the Air Battle Master, it learned Giga Impact but decided to stay for training. But during Sinnoh League it returned back to Ash with powerful moves from its learnings. However, it was not seen after Paul's battle in the Pokémon League. Later, it appears with other Ash's Pokemon in opening scene of BW: Adventures in Unova.
Ash first encountered his Gible when he met Old Lady Tatsu, a woman who was teaching an Altaria a special move for Dragon Pokémon, Draco Meteor. Ash assisted Gible in the learning of the move and Gible decided to follow Ash. It also has the habit of biting on to heads. Later on, Ash noticed Gible followed him and eventually captured it. It has many powerful attacks such as Draco Meteor, Dig and Dragon Pulse and is sure to be a powerhouse of Ash's team.
Oshawott was one of the starters in Unova who Professor Juniper was giving away. However, after Ash left, Oshawott started following Ash and even defended him against Team Rocket. Professor Juniper gave Ash the Poké Ball for Oshawott which Ash used to obtain Oshawott. Oshawott is very affectionate towards Ash and even tries to knock Pikachu off of Ash's shoulder. It has many powerful attacks including Water Gun and Razor Shell, allowing it to be a prominent member of Ash's team. Similar to Bayleef, Oshawott is jealous of Pikachu's bond with Ash and even sometimes pops out of its Poké Ball to show its worth. In BW027, Oshawott develops a crush on Iris' Emolga. Oshawott's Moves: Water Gun, Tackle, Razor Shell, Aqua Jet and Hydro Pump.
Ash found Tepig when he was at the Battle Club in Accumula Town when he saw it escape from the Battle Club's warehouse. When he found it, he saw its mouth had been tied by its past trainer who left it at the Battle Club after it lost to a Deerling, making it unable to eat and so Ash helped free it and created a bond with it. It has powerful fire attacks such as Ember and is bound to be a prime member of Ash's Unova team, but at the moment it seems to lack confidence in its strength. It later confronted its original trainer and evolved with new-found strength, confidence and resolve. Pignite's Moves: Ember, Tackle, Flame Charge, Flamethrower, Fire Pledge and Brick Break.
Ash found Snivy when he was in a forest heading towards Nacrene City. Snivy is a female Pokémon and knows the move Attract which it used to stop the opponent Pokémon in their tracks. Ash encountered it after it had taken some of Cilan's food. To stop it, Ash decided he needed to capture it It also has powerful grass attacks such as Leaf Blade, Vine Whip and Leaf Storm. In addition to that, it has been shown to be very agile and able to evade attacks expertly. Snivy seems to be stronger, confident, and skilled compared to the other Pokémon Ash has caught in Unova. Trip even said that Snivy was a strong Pokémon, enough to defeat his Servine, Snivy's evolved form. Snivy's Moves: Attract, Vine Whip, Leaf Storm and Leaf Blade.
After receiving an egg from the Day Care in Route 3, the egg eventually hatched into Scraggy. However, Scraggy is a bit of a violent Pokémon, attacking Ash, Iris & Cilan's other Pokémon at will. Scraggy is a very angry Pokémon, but unfortunately its attacks, such as Headbutt, are not strong. However, despite this, it is continually trying to improve its Headbutt attack. It went back to the lab in BW037. It later learned to use Hi Jump Kick from a Scrafty in BW045. Scraggy's Moves: Leer, Headbutt, Hi Jump Kick and Focus Blast.
Leavanny is a Pokémon Ash caught as a Sewaddle while he was travelling through Pinwheel Forest as Ash was interested in Sewaddle. Sewaddle was the sixth Pokémon Ash caught in the Unova region. Sewaddle and Tranquil are being switched from Ash's team and with Professor Juniper. It evolved into a Swadloon in BW025 during a battle with Burgh's Whirlipede. Swadloon went to Professor Juniper in BW032 and returned back in BW035. It returned to the lab in BW037. In BW076, Swadloon evolved into a Leavanny during a battle against Iris's Emolga and as a result started to make clothes and headgears out of leaves for Pikachu and the other Pokemon, which they like. Leavanny's Moves: String Shot, Razor Leaf, TackleBug Bite, Energy Ball and X-Scissor.
After evolving from Metapod, Butterfree managed to defend Ash from a swarm of Beedrill. From this it managed to gain some power and became a vital part of Ash's team during it's tenure. It eventually left to start a family with a female Pink Butterfree.
After Pidgeotto evolved into Pidgeot, it went into battle against a flock of Spearow and Fearow that were terrorizing Pidgey and Pidgeotto in Viridian Forest. After the battle was done, Ash decided to leave it in the forest to lead the flock, but left with the promise that he would someday return for it.
Lapras was the first Pokémon that Ash captured in the Orange Islands. Originally it was found washed up on a beach but Ash & Co. managed to help nurse it back to health until it was kidnapped by Team Rocket. Ash managed to free it and captured it until they could find Lapras' family. Lapras was primarily used as the gang's transport throughout the Orange Islands but it was also used in several of the Gym battles and the final League match. Ash eventually let it go to be with it's family, but saw it again when in Johto and helped it defend a lab and the other Lapras from Team Rocket. Lapras's Moves: Ice Beam and Water Gun.
Aipom originally met Ash on a mountain where it worshiped a Giant Slaking, where it stole Ash's hat. However after Ash found Aipom, they quickly befriended. Ash originally was going to give the hat to Aipom but it gave it back. For a short time Aipom followed Ash and turned up at the Grand Festival, again stealing Ash's hat. Near to the finals of the Grand Festival, Ash decided to battle Aipom and finally caught it. Apart from it's battling strengths, Aipom has shown a great aptitude for Contests and as such, was eventually traded to Dawn for her Contests and few episodes later Aipom evolved into Ambipom.
Ash captured Beedrill while in the Bug Catching Contest just a bit shy from Goldenrod City in Johto. His capture of Beedrill made him win the contest. After the contest he decided to give the Beedrill to Casey as she loves Pokémon with yellow and black stripes, for they resemble an Electabuzz. Beedrill's Moves: Twineedle.
Ash first met Primeape after it, as a Mankey, stole his hat. Determined to get his hat back, Ash chased Primeape and battled with it ending with a capture. Primeape was a Pokémon that went berserk easily and originally didn't follow Ash's commands. However after Ash saved it from a fall in a fighting contest, it gained respect for Ash. After the contest, Ash decided to leave it with a trainer for more training so it could become a P1 Champion. However, it is highly unlikely Ash will return for it given he is easily distracted and forgets the obvious. Later, it appears with other Ash's captured Pokémon in Prof. Oak's lab, in the opening scene of BW: Adventures in Unova. Primape's Moves: Thrash, Scratch, Mega Kick and Seismic Toss.
When Squirtle was captured it was part of the Squirtle Squad, a terrorizing group of Squirtles that were causing havoc around Vermillion City. However after gaining respect for Ash, it joined his team and has since become an incredibly competent battler. It has won many Gym and League matches but has since returned to the Squirtle Squad to lead after the team started falling apart. Later, it appears with other Ash's captured Pokémon in Prof. Oak's lab, in the opening scene of BW: Adventures in Unova.
When Team Rocket was trapped inside the Pokémon Center's PC system so they could steal Pokémon, Ash borrowed a Porygon from Dr. Akihabara in order to stop them. After that, they left the computer world and returned it to him.
The Pokémon League entrance exam instructor gave Ash an Arbok by having him choose his own set of Poké Balls provided by the instructor. It was used during a Pokémon League exam by battling the Instructor's Jolteon and lost. Ash even used it to help stop Team Rocket and send them blasting off. After that, he gave Arbok back to the instructor.
The Pokémon League entrance exam instructor gave Ash a Weezing by having him choose his own set of Poké Balls provided by the instructor. It was used during the Pokémon League exam by battling the Instructor's Flareon and won. Ash even used it to help stop Team Rocket and send them blasting off. After that, he gave Weezing back to the instructor.
Meowth was the third and final Pokémon used by Ash during the Pokémon League exam. It was up against the Instructor's Vaporeon in which Vaporeon froze the Meowth causing Team Rocket's Meowth to interfere with the battle by kicking the frozen one free. It was accidentally blasted off along with Team Rocket. The temporary switch was fixed in the next episode
This Butterfree was found on Wayfarer Island as a Caterpie, where its lazy tendencies caused it to not evolve and be left behind by its swarm. To help it, Ash temporarily trained the wild Caterpie in order to help it evolve all the way to Butterfree so it wouldn't be left behind. Caterpie evolved into Metapod after it and Pikachu fended off a wild Ursaring. To save Pikachu from Team Rocket, it evolved into a Butterfree and teamed up with Pikachu to blast the trio away. Afterward, it had a tearful goodbye with Ash as it returned to its swarm.
Ash temporarily commanded a borrowed Rhyhorn, in order to participate at the Rhyhorn race held at Sumiru Village. In the beginning it was hard for Ash to handle it, but gradually it teamed up with Ash.
Ash met Haunter in IL023: The Tower of Terror in the Pokémon Tower in Lavender Town. It, with several other Ghost Pokémon played with Ash after he had been trapped under a chandelier. However after Ash returned to his body, Haunter agreed to join Ash's team to battle Sabrina's Psychic Pokémon. Once it got to Saffron City, it disappeared but eventually returned to battle. However it was much more interested in joking about and immobilizing Sabrina's Kadabra and thus Ash decided to leave Haunter with Sabrina. Haunter's Moves: Lick.
While not Ash's per say, Larvitar was in an egg that Ash was given to take to Professor Elm, however in transit of the Egg it hatched into Larvitar. Like any Pokémon just hatched it had the personality of a child, but a tortured child through memories of what happened to its mother. It froze up whenever anyone other than Ash spoke to it or held it, which it eventually managed to get over. Not long after meeting, Ash managed to return it to its mother and stopped the Poachers from ever disturbing them again. Larvitar's Moves: Screech, Hidden Power, Harden, Bite and Dig.
Ash befriended Victini in the first "Black and White" movie. Learning of it's past and the unfortunate events that leave it trapped within the city, Ash helps heal the wounds in Victini's heart that the centuries of lonliness had inflicted. In the climax of the movie, Ash helps free Victini from unintentional harm in trying to revitalize the land with the Dragon Force, destroying the pillars that kept Victini trapped in the city, allowing the Pokemon to go wherever it's heart desired.
Ash befriended Reshiram in the first "Black and White" movie. Learning of it's past and the unfortunate events that leave it trapped within the city, Ash helps heal the wounds in Victini's heart that the centuries of lonliness had inflicted. In the climax of the movie, Ash helps free Victini from unintentional harm in trying to revitalize the land with the Dragon Force, destroying the pillars that kept Victini trapped in the city, allowing the Pokemon to go wherever it's heart desired.
Ash befriended Zekrom in the first "Black and White" movie. Learning of it's past and the unfortunate events that leave it trapped within the city, Ash helps heal the wounds in Victini's heart that the centuries of lonliness had inflicted. In the climax of the movie, Ash helps free Victini from unintentional harm in trying to revitalize the land with the Dragon Force, destroying the pillars that kept Victini trapped in the city, allowing the Pokemon to go wherever it's heart desired.