Voir Adventures of Sonic the Hedgehog, Season 1, Vol. 1 - Episode 29

Robotnik plans to block out the sun and extinguish all life and nature on the planet Mobius. Then he creates a robot son and tries to train him in the ways of wickedness. But when Robotnik Jr. meets Sonic, he becomes a naturalist and teams up with Sonic to thwart Robotnik's evil scheme.