Dohnaseek

Dohnaseek is a minor antagonist in High School DxD, specifically appearing in the early story (Season 1 / Volume 1).

He is a Fallen Angel who allies himself with Raynare (under her alias as "Yuma") in her scheme to steal Asia Argento's Sacred Gear. He works alongside other Fallen Angels like Kalawarner and Mittelt.

Appearance-wise, he's depicted as a middle-aged-looking man with short black hair, dark blue eyes, and typically wears a trench coat, fedora, gloves, and formal attire — giving him a classic noir-ish vibe.

Personality: He's portrayed as somewhat of a battle maniac who enjoys fighting and shows arrogance toward his opponents.

In the plot, he's the first Fallen Angel to directly confront and attack Issei Hyoudou after Issei becomes a devil, using light-based spears as his main weapon. His role is short-lived, serving mainly to introduce the threat of the Fallen Angels and escalate the early conflict.