The group only values resources truly, if you do not have good connections you likely won't make it far unless you are especially gifted or they see a use of you. The fights are a cover, entertainment, they trick normal humans into battles that are impossible for them to win for money or a laugh.
That is how I found them in the first place. I did not want to reveal too much so I lost my first few fights on purpose, let them think they had an upper hand before revealing my full strength. I have yet to gain the ear of the leader but I am free to come and go as I please at the various locations without incident.
I assume you have not yet spoken to Thor about my involvement?