Crobat as a Zubat is shown as a loyal, friendly and kind-hearted Pokemon even in its evolutionary stages. As a Golbat, he and Pineco are shown to be caring towards its trainer Brock when he was sick until it evolves into Crobat when Brock cheers it to chase Team Rocket on air after stealing the Queen's artifacts. When it was taken care by Brock's younger brother, Forrest. Crobat retains its kind personality.
Brock captured Crobat as a Zubat when he spotted it on his way through Mt. Moon in Clefairy and the Moon Stone, but its capture was not seen on screen. He later sent out Zubat to battle Team Rocket. He rarely used Zubat for direct combat, instead focusing on confusing opponents with Supersonic.
In Johto from the episode Hassle in the Castle, Brock encountered a doctor named Dr. Anna who had a female Zubat nicknamed Mimi. Brock used his Zubat to team up with Dr. Anna's Mimi to find the exit of the maze beneath the castle after Team Rocket steals most of the patient's food. Brock later uses Zubat in a fight against Team Rocket. While battling, Zubat evolved into a Golbat and it manages to deflect Arbok's Poison Sting with Wing Attack and knocks Team Rocket's Pokémon with a powerful Supersonic before being blasted off by Ash's Pikachu's Thunder Shock. Although, Golbat's Supersonic also manages to wreck Dr. Anna's laptop due to overloading that causes Brock to get rejected by her after she complimented about his Golbat became stronger.
It was only a Golbat for a short period of time. In Sick Daze, Both Golbat and Pineco are the ones to guard Brock when he was sick as the former uses Supersonic to knock Brock down so that he could rest. Later, when Team Rocket steals most of Ash and Misty's Pokemon including Brock's Onix and Geodude, Golbat manages to slice the Meowth Balloon with Wing Attack, freeing everyone's Pokémon, forcing both Jessie and James to release both Arbok and Weezing to battle them. Due to Brock's near recovery, he fought them both using Golbat and Pineco as both of them manages to knock Arbok and Weezing with their headbutts allowing Onix to use Rock Throw on them and Pikachu to blast them away with his Thunder. In the end of the episode, both Golbat and Pineco guards Brock until he is fully recovered while dreaming about the three girls he encountered from his dream.
He soon evolved into a Crobat in another battle with Team Rocket in the episode Control Freak!. Before it evolves into Crobat, Golbat is the only Pokemon who resisted the Queen's control made by Jessie. Crobat flies faster to stop Team Rocket from escaping and using its Wing Attack to destroy their rocket.
In Lapras of Luxury, Brock uses Crobat to hold Team Rocket's Pokémon off and it used a newly revealed Sonic Boom to knock them down.
Crobat is later been taken care of by Brock's younger brother, Forrest to his care as Brock travels to Hoenn to meet up with Ash and his new friends, May and Max.
Back at Kanto from the episode Grating Spaces!, Crobat along with Geodude and Onix who finally evolved into a Steelix to reunite with Brock at the Pewter Gym from his hometown.
|Whirlwind||Clefairy and the Moon Stone|
|Supersonic||Clefairy and the Moon Stone|
|Wing Attack||The Spell of the Unown|
|Sonic Boom -||Lapras of Luxury|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.
Shin-ichiro Miki (Japanese and English)
- He is male, because in episode 165 "Hassle in the Castle", Brock used him to impress a trainer who had a female Zubat.
- In both the Japanese and English versions of the anime, he is voiced by Shin-ichiro Miki who is best known for playing James of Team Rocket in the original Japanese version and who also plays Misty's Staryu and Ash's Charizard.
- Crobat is Brock's only -type Pokémon.