Osk

Osk is a minor supporting character in Overlord, appearing primarily in Season 4 (the Holy Kingdom arc and related events).

He's a wealthy, self-proclaimed "humble" merchant from the Baharuth Empire who owns and promotes the current Martial Lord (Go Gin) at the Grand Arena in the imperial capital. Osk is a stout, bald (or nearly bald) man with a passion for collecting rare weapons and armor, and he deeply admires strength and powerful fighters—despite not being a skilled combatant himself.

He's notably attracted to muscular women (like Gagaran from Blue Roses) and employs strong bodyguards, including the eccentric assassin Headhunter Rabbit. Osk ends up interacting with Ainz when the Sorcerer Kingdom seeks to arrange exhibition matches in the arena.