Thing was seen from Spider-Man's imagination about his early encounter with Trapster who stuck the web-head with him.
When Spider-Man, mind-switched into Hulk's body by Mesmero, ends up in town, he is attacked by Thing, who was summoned by Nick Fury to try and contain the Hulk. Spider-Man, Hulk (who is in Spider-Man's body), and Thing eventually clear things up, corner Mesmero and force him to switch Spider-Man and Hulk's minds back.
Thing appears attending a card game with Spider-Man, Hulk, Red Hulk, and She-Hulk. It is during this time that he was suddenly captured by the Collector along with Red Hulk and She-Hulk. He was later freed and sent back to Earth.
Trivia[]
The Thing is the only member of the Fantastic Four to appear in Ultimate Spider-Man and Avengers Assemble.