A rare Filo Rial and Firo's only disciple—basically the only one of his kind around. He's not the same species as the rest of Firo's family, which makes him pretty unique.
Thanks to Motoyasu's meddling, he actually ended up becoming a king somehow. Despite being genuinely intelligent and totally capable of speaking human language, he plays dumb and pretends he can't talk. Fans often note that he does this deliberately, mostly because he gets a kick out of watching Naofumi get frustrated by Firo's antics. It's a pretty funny running joke that he keeps the bit going even though he's clearly smart enough to know better.
Content compiled by AnimeList.moe from publicly available sources.