Aran

Aran is a giant monster from the animated Kaiju series, Agara. He first appears in season 1.

Origin
Aran is a powerful mutated dinosaur Kaiju from Japan, accidentally created in the 1960's by nuclear testing. At some point, a group of scientist manages to capture and imprison Aran underground in the forests around Mount Fuji where he laid dormant.

History
Aran continued his slumber until he was disturbed by the battle between Agara and Egaron, causing him to wake up from his sleep and began to attack both monsters.