Professor Oak

A character from Pokemon Red, Green, Blue.

BOY or GIRL
A Pokemon professor from KANTOOOOO who gives kids a CHARIZAAAARD and two other irrelevant lizards. Stopped holding back and evolved from his calm persona into PSYCHO OAK.

Off-Season 8
When Oak's madness can no longer be contained and he runs out of poor unsuspecting trainers to vanquish, he turns to the ring, showing his full power unlike when he held back for some edgelord ages ago.

On his way he captures a trainer-less Regigigas that was around.

Episode 55
With the sheer madness contained within Oak, he was able to see right through Jacket and Cow, and ordered Regigigas the correct move to snatch their newly won titles.

The Extinct Light
Now not even his field of Pokémon can contain him, as he branches into human medicine.

Episode 1

Mr. Beast contacts Oak as his "expert friend" to work with the man he is offering aid to, Albert Wesker, on his experimental melanin therapy as the first man to ever receive it. Oak believes they should speed up the process by going from a few micrograms of "experimental melanin" per day to several grams.

Episode 2

Comes out to Sareth's ringside to observe and intimidate his future tag-team opponents.

Episode 3

Conserves the titles thanks to his brilliant pokemon tactics.