Jessie/Anime/Main series/Character

She has a long-standing bitter rivalry with Cassidy, another member of Team Rocket.

Jessie seems to have a special preference for snake-like Pokémon, owning both an and a. In The Ninja-Poké Showdown, she expressed a preference for Pokémon in general. Though several and  Pokémon have since appeared on her team including  and.

Jessie is prone to vanity and explosive anger. She values her appearance, and she can get furious when her face or hair is damaged, such as in The Tower of Terror, Don't Touch That 'dile!, A Tail with a Twist, Maxxed Out!, A Meteoric Rise to Excellence!, One for the Goomy!, and Good Friends, Great Training!. When this happens, she may do things like beat up a Pokémon such as or her. Furthermore, Jessie goes into a violent outrage whenever someone insults her beauty by calling her old, such as the episode The Battling Eevee Brothers when calls Jessie an "old hag" (Japanese: oba-san). This is a trait she shares with James, who hates being referred to as an old man. She is also angered (compared to her companions, who are usually depressed when they fail at something) when missions are either failed or botched, which is a regular thing. At times, her anger is also shown to scare James and Meowth, usually when they are expecting it or if she really loses her temper. This intense anger was demonstrated in the Indigo League, Orange Islands and part of the Johto League story arcs. However, her anger tantrums have become less frequent and eruptive over the next story arcs.

While she is very incompetent when it comes to stealing Pokémon, Jessie eventually becomes a highly accomplished Performer and a Master Class semi-finalist. Indeed, after she loses to Serena, she is overjoyed by her steady progress, instead of going on her usual rants or crying like the others.

During her time in Hoenn, Jessie revealed herself to have been a former Pokémon Coordinator and re-assumed this role throughout her time in the region, but almost every time she performed terribly. Her skills greatly improved during her time in Sinnoh, during which Jessie proved herself to be a talented Coordinator. Her skills and knowledge of Contests were further showcased in Team Shocker!, where Jessie, criticised Dawn's performance after her 's attack proved distracting. Jessie tended to showcase her relationships with her Pokémon. She was consistently noted for her unique style and enthusiasm, literally throwing herself into her performances and enduring attacks. Despite being defeated on many occasions, Jessie has nonetheless been able to win a few Contests on her own, including defeating Kenny in the finals of the Contest and being praised by Top Coordinator Johanna for her winning performance in the  Contest.