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.

Fenrir doesn't like to work in groups or teams and feels most comfortable on his own. Fenrir sticks to himself, sets his own pace, and doesn't share feelings or emotions with others. While the Lone Wolf can get things done quietly and efficiently, he tends to be emotionally cut off and has problems relating to his comrades.

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 wears out his opponents through use of the Force, agility, and evasion. Once he has sufficiently tired his foes through the Force, physical, or mental assault, he quickly tries to find a means of cleanly and swiftly dispatching them - usually resulting in a somewhat risky all-or-nothing attempt at a deathblow.