Gatekeeper

The Gatekeeper (voiced by Michael Sorich) is a demon who guards the entrance to the Shadow World.

The Gatekeeper transports the Rangers into the Shadow World where he uses his staff to summon the monster spirits, which the Rangers find they cannot destroy. The Rangers destroy the gatekeeper's staff. When the monster spirits are out of control, the Gatekeeper and Olympius end up trapped in the underworld and some of the monsters escape. Olympius gets more power and the two escape. Then, he fights the Rangers with Olympius and Jinxer and is destroyed.