Incredibly bouncy, and always happy to be around people regardless of circumstance, Sigrid is, despite her haphazard and hardly serious demeanor, a very dutiful and diligent fighter. Whether or not she's simply incapable of understanding mortal danger is up to the beholder, and whether she has any actual purpose is yet to be seen.
She considers herself friends with anyone who would give her the time of day, but whether anyone can continue to stand her after their first meeting is another story.