From Muppet Wiki

Marvel Productions was an animation studio, formed in 1981 when De-Patie Freleng Studios (creator of The Pink Panther) was sold to Marvel Comics. The studio co-produced Muppet Babies, the animated portions of Little Muppet Monsters, and the animated version of Fraggle Rock.

The company also produced animated adaptations of Marvel characters such as Spider-Man and the Incredible Hulk, as well as several Hasbro-toy based series, including My Little Pony, Transformers, and Jem!