Dark Korin is the evil counterpart extracted from Korin himself, Dark Korin posseses a magical strength to give birth to any creature, like the Supreme Kais and Whiss, however, he has an extremely low amount of Power Level, he was the one who gave birth to the Evil Trio, Blazzer, Igra and Hygra. The Deadly Trio was destroying cities until Goku, Vegeta and Gohan arrived, as each one took a villain. He looks exactly like Korin, well... Like an old, chubby, blue Korin...
The Blue Evil, Dark Korin