Mr. Fantastic

Reed Richards, also known as Mr. Fantastic, is the leader of the Fantastic Four with the ability to stretch his entire anatomy to any extent and in any way, shape or form.

So far, two versions of Mr. Fantastic have appeared in HISHE: the 2005 version, played by Ioan Gruffudd, and the 2015 reboot version, played by Miles Teller.

Super Cafe: And The Reboot Goes To
The 2015 version is seen with his version of the team celebrating their Reboot at the Reboot awards.

How The Avengers Endgame Trailer Should Have Ended
After the 2005 Human Torch is wiped out by Thanos's snap, the 2005 version of the Fantastic Four visits the Avengers for help. The 2005 version of Mr. Fantastic personally requests to assist the Avengers.