|Episode:||A New Monster is Born: The Boy Who Picked up an Alien|
|Season:||Space Sheriff Gavan|
|Voice Actor:||Eisuke Yoda|
Kaibutsu Doubler is the twentieth Doubler. Its powers include rapid size growth, flight in the larval state, invisibility, an electric claw staff that emits electric surges, teleportation, high jumping and a sword.