Genius inventor Null tragically loses her older sister Peta in an accident. To get over the grief, Null develops "Peta Robo," a robot with the same characteristics as her late sister. However, the robot is a little different as to what Null expected. (Source: MAL News)

A recap special (episode 39.5) of Zettai Karen Children. Narrated by "The Double Face" (Nowaki Hotaru and Tokiwa Natsuko), the episode introduces all the characters in B.A.B.E.L. with their abilities and roles etc. It also shows various facilities and places in B.A.B.E.L that have appeared in the story.

The continuation of Yurumates 3D right after the first season.

Short specials from the DVDs.