Reed Richards/ Mr Fantastic is the leader of the Fantastic Four, he is portrayed by Matt Smith
After the events of Infinity War, Reed Richards, along with Sue and Johnny Storm and his best friend Ben Grimm go on a Stark Industries Britain funded Space expedition to check out an unusual cosmic ray. Unfortunatly when they reach the cosmic ray, it destroys the ship and crashes into the moon where Attilan is. They discover that they are infact Inhumans as the Cosmic ray is infact Terrigan.
Fanastic Four and the Inhumans (First appearence)
Fantactic Four: Incursion of the Skrulls