Galactus

Galactus is a character from the animated television show The Avengers: Earth's Mightiest Heroes, Ultimate Spider-Man and Hulk and the Agents of S.M.A.S.H., He was voiced by John DiMaggio. Galactus is an extraterrestrial that lives on a artifical planet called Taa II. He is known as the planet destroyer because he eats the planets whole. His powers are the Cosmic Energy that is in him. He can take some of his own Cosmic Energy and give it to a living creature and turn him into a herald. He is the enemy to the Fantastic Four and the Silver Surfer.

The Avengers: Earth's Mightiest Heroes
In the episode "Prisoner of War," it is revealed that he was responsible for destroying the Skrulls' homeworld. Later, Galactus and his Heralds appear. He begins consuming the Earth and the Avengers intervene with their superhero allies. Mister Fantastic and Iron Man discuss a plan to send Galactus to the Negative Zone because he feeds on anti-matter. They create the portal to the Negative Zone and send him in leaving him trapped there to feed on the infinite anti-matter in the Negative Zone.

Ultimate Spider-Man
In the episode "Beetle Mania" Spider-Man imagines Mary Jane Watson is capable to convince Galactus that eating planets is bad to his health.

Hulk and the Agents of S.M.A.S.H.
Galactus was summoned to Earth by his hearld Terax the Tamer. But instead of eating the earth he came to earch for a new herald (She-Hulk) to replace Terax. Once the new herald did not want to join him, Galactus attack the plant by activiating his ship Taa II and battled against all the Hulk's. In the end Hulk through the fight and Terax was returned his powers.