Fenrir

Being the son of a demoniac god and a giantess, Fenrir is feared by everyone, even the norse deities, who know that nothing good can come from this terribly strong creature.

Overview
Fenrir has extremely good stats except for life, very powerful moves with NO cooldown, and Rage of Fenrir, which gives Triple Damage for three turns while Stunning the target for one turn. Fenrir is very fast, very powerful, and very dangerous. He is the only attacker, and the only monster besides Goldfield, Jabaline and Discobolus, which is 100% immune to Cooldowns Activated.

Pros:
 * High speed for an attacker
 * Really good power
 * Moves have low stamina costs
 * None of his moves have cooldowns. None. 
 * AoE Bleed, Nightmares and daze (Not in one move though)
 * Signature move: Rage of Fenrir, is absolutely broken

Cons:
 * Bad Life
 * Garbage Trait
 * Power is high, but not so special in comparison with newer attackers

Werewolf Power

 * Devastation Axe (65 special damage, 27s, no CD)
 * Black Wolves Depredation/Wolves pack (Black for 55 dark damage+bleeding, 26s, no CD/Wolves Pack for 30 AOE dark damage+Bleeding, 32s, no CD)
 * Scary Howl/Wolves pack (Scary howl for 20 AOE dark damage+daze+nightmares, 35s, no CD)
 * Rage of Fenrir (gives triple damage to an ally for three turns+stuns the ally, 26s no CD)

Unfortunately, Fenrir can't effectively use Rage of Fenrir on himself without getting stunned. However, the skill itself is still very powerful. His other moves are very good too. Devastation Axe is your solid 65 base power move which just destroys stuff. Scary Howl spreads both nightmares and daze. You can choose between Wolves Depredation and Wolves Pack, both are really good moves. Use everything on your power to crush your foes. You can either boost your allies that are immune to stun or just go for damage straight on by spreading your status effects. Devastation Axe is mostly a finishing move. It isn't very hard to use, especially since there are no cooldowns on his moves. Fenrir is a joy to use against Timerion, since it can't do much against it other than Stop-Time, and he is a trouble for Patient Cyber, Captain Copperbeard, Mountezuma (which is also an Earth monster) and any other monster which uses CDA, because Fenrir is completely immune to it.

Recommended Runes: 2 Strength, 1 Speed

Counters
Strong Light-type monsters can kill Fenrir pretty quickly. Wyrmlad and Ragnael, thanks to their Celestial trait which makes them immune to bleeding, are great choices, while Draghar is effective too. Fenrir is immune to nightmares, which means you can freeze or possess him all the way you want. I wouldn't recommend using stun since most of them are Earth monsters and they are weak to Fenrir's Black Wolves Depredation, Wolves Pack and Scary Howl.