Team Rocket trio
The Team Rocket trio, sometimes referred to as TRio, is a trio of members of Team Rocket, Jessie, James and Meowth.
In the anime
Since making their debut in the very second episode of the anime, they have since appeared in every single episode up until the Best Wishes series, where they appeared less frequently. As such, they are the most prominent representation of Team Rocket as a whole in the anime.
In most of their appearances, they attempted to capture Ash's Pikachu or any other Pokémon to give to their boss, Giovanni. However they get defeated almost always and are blasted off with their iconic catchphrase "We're blasting off again!".
Even though they usually only cause trouble for the main characters, they still sometimes helped them, mostly when they're dealing with a common enemy. Like in The Power of One and later against Team Aqua and Team Magma. They also played a key part in the fight against Team Galactic, teaming up with Looker.
Though their general incompetence in making any sort of contribution to Team Rocket didn't go well for them as Giovanni was shown to not even remember who they were in The Thief That Keeps on Thieving!. However due their false reports that they were the ones to disband Team Aqua, Magma and Galactic, Giovanni's secretary recommended them to Giovanni for his plans in the Unova region. The trio got promoted and soon they became more serious and less goofy. They focused less on capturing random Pokémon and more on Giovanni's mission.
In the games
Jessie and James appear and are involved in Team Rocket's scheme, and typically appear before the player battles Giovanni. They also replace the three Team Rocket members in the Pokémon Tower that hold Mr. Fuji hostage as well as two Team Rocket Grunts: one close to the exit of Mt. Moon and the other one near the entrance to the President's room at Silph Co. Curiously, they are never referred to by their individual names and share their Trainer class with any other Team Rocket Grunt.
