Fenrir as personal guilt.
I think Fenrir repentants out guilt as well. He represents all the things we consider ugly, wild, untamed about ourselves. He is the side that will not allow others to harm us. He is the one who reminds us that our wildness is not ugly but beautiful. He is our guilt at not treating ourselves with right or correct behaivour to ourself.
He reminds us that no matter how we bind these feelings. Bind out negativity that it will break free. It will devour ous and our sanity. That burying and binding something like that can destroy us in the end.
That is something to think about.
Burying and binding something that is a part of you in the end when it breaks free can destroy you. It can tear you apart and swallow you whole in it’s madness.
So Fenrir reminds us to deal with what ever is bothering us. Not to bury it. Not to chain it. He reminds us not so gently to confront it. To deal with it. To own it. To make it a part of our self and not deny it.