Clipped from Wikipedia: Super Juniors are a group of fictional DC Comics characters based on members of the Justice League of America, designed as baby versions in order to appeal to younger audiences and introduce them to the publisher's most popular properties. At Kenner's request, first appeared in José Luis García-López' 1982 DC Comics Style Guide and had their first and only adventure in Super Jrs. Holiday Special: Best of Blue Ribbon Diggest Series #58 (1984); however, there was a considerable amount of merchandise (toys, wallpapers, bed sheets and covers, etc.) based on them.
Characters include "Jr." versions of Superman (Super-Kid, Casey), Batman (Bat-Guy, Carlos) and Robin (Kid-Robin, the Shrimp), Wonder Woman (Wonder Tot, Deedee), Flash (Flash-Kid, Rembrandt), Green Arrow, Green Lantern, Hawkman and Aquaman. In the Holiday Special, they are orphan kids from the Miss Piffle's Nursery School, transformed by the fairy spirit of Christmas into superheroes to stop the evil Wallace van Whealthy III, the Weather Wizard, a school bully super villain and rescue Santa Claus.