|Relatives:|| Brainiac (ancestor)|
|Base:||31st century Metropolis|
|Affiliations:||Legion of Super-Heroes|
|Abilities:|| 12th level intellect|
|Weaponry:|| Force-field belt|
|Voiced by:||Matt Czuchry|
Brainiac 5 was a 12th-level intellect Coluan who was a member of the Legion of Super-Heroes in the 31st century. He was a descendant of the original Brainiac, who had at some point discovered a way to pass his code down biologically. While Brainiac 5 shared his ancestor's genius, he rejected the malevolence that made the original Brainiac feared throughout the galaxy.
Supergirl, Green Arrow, and Green Lantern were transported to the 31st century by Brainiac 5 and Bouncing Boy in order to rescue the rest of the Legion from the Fatal Five. Despite Stewart and Bouncy soon falling victim to the Five's mind-control device, the surviving heroes were able to win the day. Partially due to her comfort with the Legion's era of advanced technology, and partially due to a mutual attraction between her and Brainiac 5, Supergirl elected to stay behind (or ahead, rather) in the 31st century as a member of the Legion.
Powers and abilities
Brainiac 5 has no innate superpowers apart from his vast 12th-level intellect and knowledge of hand-to-hand combat, but as a genius inventor, he wears a powerful force-field belt of his own design that is strong enough to withstand blows from Supergirl. He also wears the standard-issue Legion flight ring, which he also created.
Other than the tri-circled Brainiac symbol on his forehead, Brainiac 5 bears little to no resemblance to his ancestor outside of a vast intellect and the curious blue-green hue of his skin. In the comics, Brainiac 5 had green skin (as did his ancestor) but this was changed because Brainiac's (artificial) skin color was blue in Superman: The Animated Series.
- "New Kids in Town" (Cameo)