Shadow King

The Shadow King is the first boss fought in The Knight Apprentice's Adventure. He is a purple ghost that wears a crown and commands the ghosts of the Haunted Fields.

Lore
He used to maintain the Dreamy Factory near the Starpower Galaxies. However, Colt defeated him and shut down the factory, and he had to move on. He and his subjects and his cousin moved to the Haunted Fields. However, some time before the start of Calvin's journey, Celio stole his crown, and he sent his subjects to investigate the theft.

Strategy
It's not a really hard fight. Calvin should use Dash Slash, and Mary should use Flame. Heal if your HP gets too low, and some minutes after the attack spam you just did, he shall be defeated.