Fenris

Fenris:
"'Lorcan's out of control spawn, Fenris has a need to feed. He loves nothing more than creating his own nascent werewolves.'"

Strategy:
While it can deal a ton of damage, Frenzy will consume all your remaining AP, so plan carefully. It has great synergy with Fenris’ Adrenaline trait; as Fenris loses health, Adrenaline increases the base damage of Frenzy, and then each AP you use will magnify that damage. While some thought is required prior to using Frenzy, you’ll need to take much more consideration before attacking with Devour. Devour is vastly overpowered for its cost, however, Fenris will turn any target of Devour into a Werewolf more powerful than himself, and the effect will last until the end of the match. Devour should primarily be used as a finishing blow to KO enemies. If Devour is used, but the target still clings to life, there is a 50% chance the target will turn into the Crazed Lycan, which also has the Adrenaline trait. A Crazed Lycan with maximum Adrenaline is probably the last thing you want to see in the world of Might & Mayhem. Avoid this situation at all costs.

Items:
Consider using a Protect item. Though its damage reduction will slow down gaining increased buffs from the Adrenaline trait, when at lower health Protect items will allow Fenris to stick around longer when his Adrenaline buffs are at their highest. The synergy is even better with Adrenaline II, which has a similar effect as Protect when below 25% health.

Use an Offense Boost item to make Fenris even more powerful, or a Defense Boost item for an even longer leash on Adrenaline. Find a Fowl Rattle (or an ally with Fowl Rattle) for a chance at the devastating Chicken-Devour 1-shot KO.

Team:
Team up with the Witch Doctor for the Fowl Rattle alternative-- aka the devastating Frog-Devour 1-shot KO. Team up with Fenris’ wolf allies, Snarltooth or Sabreclaw, for their complimentary low-cost abilities and awesome Howl buffs, which can combine with Adrenaline for huge damage possibilities. Bring along a Priestess or Sorcerer for the little health bumps needed to keep Fenris going without running on Adrenaline alone. Try teaming with a Dispelling ally like Realmcrush or Stone Warlock, so you can Devour an enemy and then remove the Bitten status effect from them.