The Wonder Twins are a fictional extraterrestrial twin brother and sister superhero duo who first appeared in Hanna-Barbera's American animated television series The All-New Super Friends Hour. The pair can activate their superpowers by touching their fists and saying the phrase "Wonder Twin powers, activate!" Jayna can transform into any animal, and Zan can become water in any state. The pair also have a pet monkey, Gleek, who assists in their crime-fighting activities.

The All-New Super Friends Hour is an American animated television series about a team of superheroes which ran from September 10, 1977, to September 2, 1978, on ABC. It was produced by Hanna-Barbera Productions and is based on the Justice League and associated comic book characters published by DC Comics.