Fenrir

is an original character made for The Seven Deadly Sins: Grand Cross mobile game. He is a Beastman, the adoptive son of Loki and the adoptive brother of Jormungand and Hel.

Appearance
In his human form, Fenrir is a short young boy with dark skin, messy white hair, ears and tail of a wolf and a rather well-built physique for a boy of his age. He also possesses heterochromia, his right eye is red and his left one is blue.

History
When the Seven Deadly Sins somehow got transported to Midgard, he runs into the Boar Hat where he passed out from the freezing cold. Thankfully, he was nursed back to health, and proceeded to explain everything to the Sins. However, word about him traveling in the Boar Hat gets attention of Sigurd, who demanded Fenrir to be surrendered to him. Fenrir tried on surrendering himself to keep his new friends safe but Meliodas points out they would still be attacked by Sigurd even if Fenrir handed himself over.

Later on he would help Ban get a antidote to Sigurd's curse on Meliodas.

Fenrir would later meet his adoptive sister, Jormungand, who joins with him on his quest to find Loki. He and Jormungand would help King out against Freyja when they were transported to Alfheim by Oslo.

Abilities and Equipment
Not much is known about Fenrir's powers, but being a Beastman, he is capable to switch between a human form and a bestial form. Fenrir is shown to handle a couple of a guards when he was accompanying Ban to cure Meliodas from Sigurd's curse indicating he has some super-human strength.

Actually, most of his strength and power was suppressed in order to protect him. After unlocking some of that supressed power, it allowed him to go toe to toe with his enemies such as the God of War Tyr.

Trivia

 * Fenrir is named after that is one of Loki's children and the one destined to kill Odin during the Ragnarök.