Arbo is the Japanese name for Ekans, a recurring Pokémon in the Pocket Monsters series. It is a purple, snake-like Poison-type Pokémon known for its ability to coil and strike quickly. In the anime, Arbo is often associated with Team Rocket’s Jessie, who uses it as one of her signature Pokémon. The character’s role is mainly as a companion in battles and comedic scenes, helping emphasize Jessie’s personality and Team Rocket’s recurring attempts to capture Pikachu.