King's specialties include unparalleled healing capabilities, which makes King preferable in multiplayer games, but incredibly weak in solo games; and combo locking.
The King first appears in the Home Castle. The King is first seen shivering in fear as the Evil Wizard approaches closer to the King, only to steal the crystal and spare the King. Next, the King reappears in Catfish, armed with a loaded boat that can help aid the player(s) by visual cues and stunning Catfish. Afterwards, in Tall Grass Field, the King is seen pacing back and forth on land, possibly planning a push. In Pipistrello's Cave, after Pipistrello is no longer considered a threat, the King, along with several Gray Knights, push even further to initiate the siege in Flowery Field to aid the player(s) in rescuing the Green Princess from the Conehead Groom. Finally, the King reappears after the Evil Wizard has been defeated and rewards the player(s) in kissing the Orange Princess, before leaving, in the Final Battle sub-level, dubbed Barracks.
The King is the supposed caretaker of the four Princesses, as well as the founder of the Home Castle, and keeper of the crystal.
Being a man of such great power, the King has several distinct features. Thick white eyebrows, a grown white beard, a modified crown to suit his monarchic appearance, and puffy clothing with dots, according to his character portrait. The King appears throughout the game in "speech bubbles" pertaining to what new item or combo the player has got or learned via level up or attributing points into Magic enough for a threshold, respectively.
- King is the only playable character with a non-offensive Splash Attack.
- If playing as King in Tall Grass Field, the NPC King, normally seen as everyone else, will disappear entirely.
- King is a D Rank character (D-). However, when taking Multiplayer games into account at the King's maximum potential or near maximum potential, he is roughly equal to Orange Knight and Red Knight, which are both in B Rank (B).