A growing doomsday cult looks upon Fenrir as a deity who will burn the galaxy and bring peace to it. Fenrir himself encourages such a thought and cult. He acts, speaks and behaves as if he is destined for something great. This results in him being obstinate, prideful and even spoilt at times.

Fenrir is seen as something of an enigma in the Brotherhood, given his animalistic behaviour and love of violence. For one, he is like an animal and yet is not one. He is sentient and yet he is too wild for that. Many find him too violent and wild to control. Fenrir is as likely to lash out at foes as he is likely to lash out at allies. However, he is still tolerated due to his penchant for wanton violence and death a fight, and for a strong desire for glory. His Clan, for instance, seeks not to control him completely, but to unleash him at their enemies to cause great destruction.

While Fenrir does know both Basic and his native Shistavanen, he is unable to speak those languages due to his being brought up by wild animals in the jungles of Uvena. He understands what others are saying in the common tongue, but himself speaks only in sharp, measured growls that others cannot understand. However, he uses Telepathy frequently to convey thoughts, mental images, and opinions to others. Additionally, he sometimes walks on all fours, both in social and martial situations, just like a wild beast. However, sometimes it becomes impossible for others to understand with him, or pick up on his good intentions. Thus, he is still considered to be a predator.

All who gain power are afraid to lose it, and Fenrir is no exception. Some use their power for good, some for evil; Fenrir, however, knows that these are just points of view. He is on a quest for greater power, and uses all his skills and abilities to ensure his supremacy, regardless of the consequences.

Fenrir is like a wild animal. He does not use any weapons. This gives him a disadvantage in any fight against those who do. However, Fenrir offsets this with his own slew of skills. He uses his large stature, brute strength, athletics, stealth, and stamina to stay clear of danger while wearing out his foe. This animalistic fighting makes him dangerous to his opponents, as well as allies who fight alongside him.

Fenrir seems to get his thrills, perhaps sadistic ones at that, from toying with his opponents. Some are content with simply striking down or injuring their opponent, but that is not enough for Fenrir. No, he wishes to see his enemy descend into madness or kneel before him as a blathering mess; or even better, as a fresh new servant with a muddled mind. The Puppeteer usually forsakes outright hurting and maiming his opponent and focuses on illusions, mind tricks, and other wicked means of destroying a person.