Spoiler Alert: WARNING! This page happens to contain a lot of heavy spoilers that are all originated from the Overlord author, Kugane Maruyama and his collection of written works. Anime-only watchers and Manga-only readers, please take some time off to reflect it over for a bit before choosing to expose yourself on reading the information below recklessly.
Fenrir (フェンリル) is a high level magical beast from YGGDRASIL.
Fenrir has the resemblance of a gigantic and monstrous black wolf. A four-legged beast with red eyes and dark green pelt that flows majestically when sprinting. Its body length was about at least 20 meters.
One of Fenrir’s skills is hastening its movement over land. It had special abilities for specialize in close combat and had quite the firepower. Fenrirs are also noted to be level 78 monsters.