Raiden (Makai Kingdom)

Raiden is Alexander's servant and appears as a boss multiple times in Makai Kingdom. Sent to kill Zetta at the game's start, Raiden fails, allowing Zetta to reach the Sacred Tome and destroying it. Zetta later tracks Raiden down and corners him, but unbeknownst to Zetta, Raiden was working under Alexander's command the whole time.