Rinju

Juubi no Kidou Senshi (十尾機動戦士, Juubi no Mobile Suit) was part Bijuu and part Gunpla Kaiju.

Background
Juubi no Kidou Senshi originally a normal Human but contact with the energy of the Master Emerald caused it to mutate into a strange cyclops-like humanoid in appearance with a conch shell-like upper body with long, spiked-like protrusions on its back. Its unique red eye, taking up most of its head, has four concentric circles with nine tomoe in the three circles closest to the pupil. It used its new powers to guarantee clean water around the altar of the Master Emerald, and to protect its fellow Human Friends.