First Appearance: Fantastic Four Annual #25 (1992).
Appearances: Fantastic Four Annual #25, Avengers Annual #21-22.
Years Active: Not applicable (see below).
A caveman, Raa was defeated in combat by Kang the Conqueror and made to join his Anachronauts, a group of warriors who served Kang across time. Sir Raston was also an Anachronaut.
Notes: I'm told that the Anachronauts were heroes despite their association with Kang; one piece of evidence is their appearance in Avengers Annual #22 in which they stop some rogue Time Variance Authority robots from stealing the comet from which the Black Knight's Ebony Blade is made.