Fenrir

Fenrir is a member of the Khaos Brigade's Vali Team. It is a wolf with giant fangs that can kill a God, Satan, and even a legendary Dragon. It is the first son of Loki and Angrboða in Norse mythology, and is the older brother of Midgardsormr.

Appearance
A giant wolf with ash grey fur that is about 10 meters long. In Volume 11, Fenrir's size has drastically decreased.

Personality
In his first appearance, Fenrir is shown to be extremely loyal to its father and creator Loki. After being subjugated, Fenrir has shown attachment to Le Fay Pendragon.

History
Fenrir is the first child of Loki and the Giantess Angrboða, and the elder brother of the Dragon King Midgardsormr (the Midgard Serpent). Fenrir is considered to be one of the most dangerous beasts created by Loki, having power that rivals the Two Heavenly Dragons, and is nicknamed the God-Devouring Wolf (神喰狼 Kamijiki Ōkami). At one point, he mated with a Giantess who was transformed into a wolf by his father and had 2 sons: Sköll (スコル Sukoru) and Hati Hróðvitnisson (ハティ Hati).

The Heroic Oppai Dragon
Fenrir first appeared in Volume 7 alongside his father, the evil Norse God, Loki, who was trying to kill Odin. During the final battle against the Gremory and Vali Teams, Fenrir was temporarily captured using the Gleipnir but was able to escape with the help of one of his sons. He then attacks Vali using his teeth to bite through Vali's Scale Mail and pierced through Vali's body with his claws, before heading to attack Tannin who he easily defeats. Fenrir was then sent to a different location along with Vali by Kuroka as Fenrir was defeated by Vali in his Juggernaut Drive before being subjugated by Arthur's Excalibur Ruler.

Fenrir reaapears in Volume 11, accompanying Le Fay and Kuroka as one of Ophis's bodyguards. During Cao Cao's attack, Fenrir switched positions with Vali through a magic circle set up by Le Fay and Kuroka.

At the beginning of Volume 12, Fenrir is seen along with the rest of the Vali Team hiding in the Gremory Palace. He is later seen attacking the Grim Reapers under Hades along with his fellow teammates.

Powers & Abilities
It has been confirmed that Fenrir's power was greatly enhanced some time before his first appearence. Fenrir's strongest attributes are its fangs and claws. Fenrir's fangs are powerful enough to kill God, Satan, and even a Dragon King. Fenrir's claws are proven to be extremely powerful as well, able to pierce through the Scale Mail armor with ease. Fenrir is also able to move at God-like speeds. Fenrir's change in size in Volume 11 suggests that it has the power to control its size.

Trivia

 * Fenrir was among the top 10 strongest in the world before losing his powers.