If there was any wolf that could wear pants and set them on fire, it would be Erna. Her dishonest personality has led her towards the stoic side of the personality scale.
Being the third wheel of the creation of Abyss Seekers, Erna only strive of staying- or rather forced to- in this group of lunatics is that she could be fed. She was born by a lone-wolf and left as one, deception is what kept her alive all of these years. So when she was given the chance to join a brand new pack where she could hold some power- she just had to take it! Though she bit more than she could chew with Sigrún as the leader.
Many lies were made to ensure her place in this strange excuse for a pack, being the 'best hunter in all lands' took a heavy blow when she couldn't catch a single thing for the pack for months. Sigrún wasn't pleased for a while, since she had to bring in prey to feed the entire pack that grew rather quickly. Thus their leader set her up in a party with the foolish Fenrir and Fryer, more reasons to spill more words of promised bounce-back and bad weather keeps Erna in this pack- or atleast that she tells herself. No one knows what goes on in Sigrún's head.