MGM Lion

MGM Lion is main villain form go animate series.

He's Evil Momma Robotnik's father and he also grounds his daughter.

Momma Robontik got turned into evil by him in the lava in to his castle.

His Wife got married.

Robotnik Jungle Beat series
he kidnapped the princess all around

Goanimate Games
He appeared in Ultimate Super Smash Bros. in last boss.

Robotnik Hoops on 4
He is playable character in Robotnik Hoops on 4.

Goanimate Racing
in Goanimate Racing his partner is Evil Momma Robotnik.