Fantastic Four (1961) 91-A

"The Thing Enslaved!"

Ben is taken to the Skrull Empire where he and a few other captured slaves are marched through the streets of a 1930's Chicago gangster town. He is to be sold to a Mobster for the big games as Ben is amused by the throw back mobsters. Ben winds up at the training facility where he shares a cell with the creature who he must fight and is owned by a rival Mobster to the one who owns Ben. Meanwhile back on Earth, Reed searches for Ben and learns that a man looking like him had been seen with Ben before he disappeared. Reed figures out that it must be the work of a Skrull.