Before the gems were discovered Sirius’s Tent (Now Bizarre Circus) was the main attraction in Starr Park (hence the name Starr coming from Sirius’s Shadow Show). However after the miner crew surfaced gems people got infected/influenced by them and turned into what we call brawlers. In a very complicated lore that I don’t even understand Starr Park executives saw potential in the carnage and decided to turn Brawlers into attractions, which the audience (that includes you and me) found marvelous. As time passed Sirius lost more and more followers and he became firius, how dare they consider this filthy fight more entertaining than my show!? I don’t remember whether Sirius had unexplained shadow powers or fell into the influence of gems but before SSS closed some people reported ‘their shadows missing’ after the show. Later Starr Park decided to close SSS which made him even more firius and he swore to take revenge. That night the tent ignites and Sirius disappears completely. Bizarre Circus is made to replace the ash pile.

