The Wonder Twins are a pair of twins, Zan and Jayna, teenage alien superheroes who were sidekicks to the Super Friends in the Hanna-Barbera animated television series of the same name. In the 1990s, these characters were heavily revamped by DC Comics for modern audiences. Character history The pair made their debut in The All-New Super Friends Hour. Zan and Jayna are siblings from the planet Exxor (also spelled Exor) who were being informally trained by the superheroes. Unlike their predecessors, Wendy Harris and Marvin White, this pair was able to participate in combat with abilities of their own. Their powers were activated when the twins made physical contact together with the spoken command, "Wonder Twin powers, activate!". (In the comics, it was revealed that this phrase was unnecessary, just a habit of theirs.) They bear a strong resemblance to Donny and Marie Osmond, who had a hit TV