Phobio

"Black Leopard Fang" Phobio (フォビオ) is one of the "Beastketeers" of the Demon Lord Karion. He is proclaimed to be the strongest warrior of the 3 "Beastketeers."

Skills
Leopard Fang Flaming Palm: essentially a powerful fire punch

Rimuru Tempest
(At least in the beginning): He regards Rimuru as a "lowly slime" who couldn't possibly rule over all of the monsters of Tempest and couldn't possibly rule over (at the time) 30% of the Jura Forest. He thinks Rimuru is a weakling and a phony.

Milim Nava
He is scared of her and what she is capable of. Phobio is only a minion of Karion and he knows that Milim is one of the most powerful Demon Lords, surpassing even his master, therefore far surpassing him as only a minion. Even the sight of her makes him uneasy. He does swear to take revenge on her one day, however.

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