Serperior first appeared, as a Snivy, in BW001: The Shadow of Zekrom!, as one of Professor Juniper's starters to be distributed to the beginner trainers in Unova. Now belonging to Trip, Snivy battled Ash's Pikachu and won due to Pikachu being unable to use any electric attacks.
Snivy appeared again in BW010:A Rival Battle for Club Champ! during Trip's second battle with Ash, where it was revealed to have evolved into a Servine. He battled Pikachu and easily defeated him with Cut, before losing to Ash's Snivy after being hit by Attract.
In BW092, it is revealed that Servine has evolved into Serperior and he will compete in the World Tournament Junior Cup and his first opponent was Burgundy and her Darmanitan. Serperior was quickly able to knock out Darmanitan with a Leer and SolarBeam combination.
In BW093, Serperior was seen having a battle with Manning's Heatmor and Cilan's Crustle. In its battle with Crustle, it wins with a combination of Leer, SolarBeam and Frenzy Plant.
In BW094, Serperior was seen battling Ash's Pignite. Pignite attacks with Tackle, Flamethrower and Flame Charge. Serperior lands a powerful SolarBeam and finishes it with Frenzy Plant. It was Sionara, Pignite after being hit by 2 thorns.
Serperior also has a battle against Alder's Bouffalant. After Leer, SolarBeam, and Dragon Tail, Alder's Bouffalant comes in with a finisher Head Charge. In BW105-BW106, it battled its rival, Ash's Pikachu. After dodging Quick Attack, Iron Tail, and Electro Ball, Serperior strikes with a mirage of Dragon Tail, as well as using Energy Ball and Wrap. Serperior lost after a collision between Dragon Tail and Iron Tail/Electro Ball.
|Tackle||In the Shadow of Zekrom!|
|Leaf Tornado||In the Shadow of Zekrom!|
|Cut||A Rival Battle for Club Champ!|
|Leer||Jostling for the Junior Cup!|
|SolarBeam||Jostling for the Junior Cup!|
|Frenzy Plant||Battling Authority Once Again!|
|Dragon Tail +||Ash, Iris and Trip: Then There Were Three!|
|Energy Ball +||Mission: Defeat Your Rival!|
|Wrap +||Mission: Defeat Your Rival!|
|+ indicates this Pokémon used this move recently.*|
- indicates this Pokémon normally can't use this move.
- Japanese: Shin-ichiro Miki (as Snivy), Kiyotaka Furushima (as Servine).
- English: Jason Griffith.