|This article is about a/an monster in Kaizoku Sentai Gokaiger.|
They were sent by Damaras to spy on the Gokaigers to learn more of their' goals. In the end, Elder is swatted away into outer space by GokaiOh's Gokai Bat while Younger is destroyed by Deka GokaiOh.
Gokaiger vs. Gavan
Elder returns for revenge along with his humanoid younger sister, Sister. Using the power of Makuu Space to create clones of himself that can combine into a giant ball, Elder and Sister battle Gokai Yellow and Gokai Green in Makuu City. In the end, they died during the destruction of Makuu Prison.
Super Hero Taisen Z
Sneak Brother Younger was part of an army of resurrected (mostly Super Sentai) monsters led by Space Raider after the revival of Madou Demon King Psycho. They proceeded to attack the gathering of Kamen Riders and Super Sentai, giving them a hard time. Younger helped beat Kamen Rider OOO with Rhino Doubler, Ayakashi Chinomanako and Action Commander Stargull. The heroes of recent years were in a pinch until the arrival of a force of Sentai and Rider reinforcements led by Akarenger and Kamen Rider Ichigo. The combined forces of superheroes were able to turn the tide against the Madou army, with Younger being beaten back by OOO. They lined up and used their various finisher attacks to destroy the revived monsters.
- Height - 198cm (Giant Form - 49.5m)
- Weight - 193kg (Giant Form - 482.5t)
- Height - 8cm (Giant Form - 2m)
- Weight - 121g (Giant Form - 0.3t)
- Younger and Sister's humanoid body is actually an artificial body,the real body is the large red orb on it's right shoulder.
- The Sneak Brother's combination is an homage to the monsters of Battle Fever J, where the main monster is a smaller being, while it's larger "younger brother" fought the giant robot in each episode.
- Elder's motif is the one of a sea urchin, while Younger and Sister's motif is the one of a turtle.