The Wizard King of the Clover Kingdom. He uses Time Magic, but is currently in a child-like form with weakened powers.

A member of the Black Bulls who has a crush on Asta. She uses Water Magic and possesses immense mana as a royal.

A member of the Black Bulls who has no mana at all. He possesses a five-leaf clover grimoire inhabited by a devil, using the Demon-Slayer, Demon-Dweller, Demon-Destroyer, and Demon-Slasher swords to reflect or nullify all magic.

The Captain of the Black Bulls. He uses Dark Magic and is an incredibly powerful mage. His Dimension Slash technique can even cut through dimensions.

A former Wizard King who has awakened from his seal and seeks to destroy the Clover Kingdom using the sword Elsdocia. He uses Key Magic and is exceptionally skilled.

Asta's childhood friend and rival. He possesses a legendary four-leaf clover grimoire, commands the wind spirit Sylph, and uses Wind Magic. He is a magical prodigy.

Her real name is Secre Swallowtail, and she uses Sealing Magic. A member of the Black Bulls, she once served alongside the first Wizard King.

She uses Plant Magic and primarily serves as a healer. A member of the Golden Dawn like Yuno, she also has feelings for Asta.

The 11th Wizard King who seeks to destroy the Clover Kingdom alongside Conrad. She uses Legion Magic to create and control countless steel soldiers like chess pieces.

The 16th Wizard King who seeks to destroy the Clover Kingdom alongside Conrad. He utilizes Barrier Magic.