Ruelas served at as Cyrus and Eclet's supervisor at SCBT labs and since they left to play Bloodbowl, Ruelas was faced with a choice. Either who joined the armies of Skavenblight to show the surface-dwellers the might of the Horned Rat or join the Bloodbowl team as a linesmen. Seeing how pretty much both of them meant certain death, he decided to join to team to die with the ones he knows.