Fantastic Four: World's Greatest Heroes
World's Tiniest Heroes
S1 E6:
One of Reed's microverse experiments causes the Fantastic Four to shrink putting them at risk when H.E.R.B.I.E. mistakes them for vermin and tries to exterminate them. The Fantastic Four are assisted by Ant-Man when it comes to getting to the lab and their lives are saved when they get to the lab with Ant-Man's help.