As all the people of earth-8, the Future Family is based in the Marvel Comics Characters, the Fantastic Four in their case.
The Future Family is a team of four adventurers with elemental powers lead by Frank Future. Thereare three known members: Frank Future, Golem and a ersazt Human Torch. It's plausible there is also an unknown female member. Their main enemy is Lord Havok.
An alternate version of the Future Family existed in earth-7 but they fell under the attack of the Gentry, who twisted and killed them.