Brainiac 5

Brainiac 5 is a 12th-level intellect and green-skinned descendant of the original Brainiac who joined the Legion of Super-Heroes in the 30th century, using his vast genius to atone for his ancestor's villainous legacy.

A Silver Age gem born in the pages of Action Comics #289 in 1962, Brainiac 5 is one of DC's most enduring super-intellects, conjured by the legendary Jerry Siegel and Jim Mooney. Across nearly six decades of comics history — from the Silver Age optimism of the early '60s all the way to 2020 — this twelfth-level mind has kept remarkable company, sharing adventures with Superman, Clark Kent, and luminaries like Saturn Woman, Cosmic Man, and Lightning Man. His deepest roots run through Adventure Comics and Action Comics, two of DC's most storied titles, and at least one of his appearances carries genuine key-issue weight for collectors. Whether you're a longtime Legion devotee or just discovering the vast, star-spanning corners of the DC universe, Brainiac 5 is a character whose longevity alone tells you everything — some legacies are simply built to last.