World's Tiniest Heroes is the sixth episode of Fantastic Four: World's Greatest Heroes and it was first aired on October 21, 2006.
One of Reed's microverse experiments causes the Fantastic Four to shrink and putting them at risk when H.E.R.B.I.E. mistakes them for mice and rat's and tries to elliminate them. The Fantastic Four are assisted by Ant-Man when it comes to getting to Reed's lab and their lives are saved when they get to the lab with Ant-Man's help.
|Reed Richards||Hiro Kanagawa|
|Suzan Storm||Lara Gilchrist|
|Johnny Storm||Christopher Jacot|
|Ben Grimm||Brian Dobson|
|Alicia Masters||Sunita Prasad|