This article is a stub. If it remains unexpanded too long, it may be deleted.

Iak is a parallel version of Kai, originally created in the Tornado of Creation that took place in the underworld during the Pilot Episodes. After becoming a human, he exploded into dust while fighting Anna (from the Elemental Girls) and became a spirit. He lives in the ruins of a mountain, and sometimes comes back to Ninjago to posess people he doesn't like.

Like the ghosts from Season 5 of the Ninjago series, he is vulnerable to water; but to destroy him you must use salt water instead of regular water.