In the Marvel Multiverse, Mr. Fantastic of the Fantastic Four is unique for the darkest reason, as he's the only version of Reed Richards who knew his dad thanks to time-travel shenanigans that left almost every Nathaniel Richards variant dead. In Fantastic Four #581 from Marvel Comics, Nathaniel visits his son in the past, revealing that the Time Variance Authority and Immortus held a deadly competition to leave one version of Reed's father standing after they all ended up on a single Earth.
Throughout his Marvel Comics adventures, Reed Richards is driven by his relationship with his family, as the Fantastic Four comprises his wife, his wife's brother, best friend, and his children. However, Mr. Fantastic's dad has his own fascinating history, as the genius-level scientist inspired his gifted son with his brilliance. He would later become a time-traveler, leading to an incident that forced each version of Nathaniel Richards from across the Multiverse to fight for his own survival. The fight, set up by Immortus of the TVA, left Reed and Nathaniel with a bond entirely unique across the Multiverse.
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In Fantastic Four #581 by Jonathan Hickman, Neil Edwards, Paul Neary, Paul Mounts, and VC's Rus Wooton from Marvel Comics, Reed Richards is visited by his dad Nathaniel while in college before the formation of the Fantastic Four. Nathaniel explains that during his travels, an incident left every version of himself stuck in the same world. So the TVA's Immortus decided to fix the potentially time-breaking reality by hosting a «Great Hunt,» where the variants of Nathaniel would fight to the death until one survived. Mr. Fantastic's dad ended up visiting the
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