Beedrill, nicknamed "Pikachu" by his former trainer, Rusty, is the main antagonist of the Dorkly video series Pokemon Rusty. He is a sociopathic Pokemon who was corrupted by Rusty's bad training.
When the series started, "Pikachu" was only a Kakuna. In episode 3, he evolved into a Beedrill and turned to Team Rocket for them being nice to him. He eventually kills Giovanni and takes over Team Rocket. He constantly seeks revenge on Rusty for the mistreatment he received from him. Read more (here).