Riley is the long time pet of Brefel and Brofel Blockalotalot, Blitzers from a dwarven Blood Bowl team, the "Karak-Izor Skull Krackers". Brefel and Brofel took their faithful companion with them every where. When Riley started to show signs that he was learning from the brothers training, they began to work with Riley, attempting to hone his skills. One day, after a "Skull Krackers" victory, Brefel and Brofel took Riley with them to the "Chasing Tail" strip club, a place frequented by the team after victories (yeah, and loses too). It was here that Riley realized that he really, really wanted to be a Blood Bowl player. He realized that with fame and fortune, those chicks would do anything... ANYTHING you wanted, and for a horny rat, just coming of age, well...

Luckily for Riley, Anguish Inc. posted a want add for Skaven looking to make a few coins as "test" subjects the following week. Riley was hoping he could turn a few of the coins in at the "Chasing Tail". Riley signed up, not knowing what to expect. Much to Anguish Inc.'s delight, they discovered Riley had an incredible Blocking instinct and hormone levels that were off the chart, which tended to leave him with a rather bad disposition. When Anguish Inc. offered Riley a position on their new Blood Bowl team, he took it without hesitation.