Adventures of Sonic the Hedgehog
Sonically Ever After
S1 E65:
Scratch and Grounder fiddle with Robotnik's Warpinating Warpifier and send Sonic and Tails into the world of a Mobius Fairy Tales book. Robotnik goes in after them and disguises himself as a Witch in a "Hansel and Gretel" episode etc., in his attempt to catch them.