Dohnaseek

Dohnaseek is a secondary antagonist in the first season of High School DXD he is a Fallen angel who allied himself with Raynare in her plot to steal Asia's sacred gear along with Kalawarner and Mittelt.

Appearance
Dohnaseek appears as middle aged-looking man with short,slightly unkept black hair and dark blue eyes.Dohnaseek's outfit consists of a grey trenchcoat with a dark grey sash,a white dress shirt with white ascot,a pair of black gloves,black pants and shoes,and a black fedora with a dark grey stripe.

Like all fallen angels Dohnaseek has a pair of black angel wings protruding from his back which enable him to fly.

Biography
Dohnaseek first appears after Issei's rebirth into a devil when he returns to the place where he was killed as a human by Raynare.Issei is remembering all the things that happened that day when he senses Dohnaseek behind him.Dohnaseek then tells Issei how unfortunate it is that he ran into him Issei then attempts to step back but his step back turns into a full on jump backwards.Issei then begins to run as Dohnaseek flies after him and eventually lands in front of him calling Issei a "coward" and a "lower class being",Dohnaseek then begins to make tactical observations about Issei such as how his "friends" and "master" are nowhere to be found and that he must be a stray devil.Dohnaseek then proceeds to draw his spear of light saying that killing Issei "won't be a problem" before proceeding to stab Issei through the stomach with his spear of light.Issei points out how much more it hurts than when Raynare stabbed him with one,Dohnaseek then points out that this is because of the fact that he is a devil now and weapons made from light are a deadly poison to devils as he prepares to kill Issei,however before he can do this Rias,Koneko, and Akeno intervene.Dohnaseek now outnumbered has no choice but to retreat but not before telling Rias that he hopes their paths don't cross again.

Dohnaseek later appears again alongside Kalawarner when they're called by Mittelt to help her fight Rias and Akeno when Issei and the others attempt to save Asia from Raynare.Dohnaseek then tells Rias about the ritual to get the sacred gear from Asia and tactically notices that Rias is only blocking attacks and not actually fighting back as he states it's "not very well thought out tool".Dohnaseek then states that no matter how strong Issei is he won't last against Raynare,then the 3 fallen angels proceed to insult Issei and taunt Rias which ultimately leads to their undoing as Rias unleashes her rage and her power of destruction killing him along with Mittelt and Kalawarner