[3] Final Boss was one of the professional teams that competed on the Boost Mobile Major League Gaming Pro Circuit that aired on USA Network in 2006.

The original lineup of Final Boss was first formed as Shoot to Kill (StK) in 2005, at the beginning of the inaugural MLG Halo 2 season.

Carbon defeated Final Boss in three straight events to close out the season, marking the first year the Ogre twins and Walshy had not won the MLG National Championship.

Final Boss made a team change for the 2007 season, dropping founding member Saiyan for Michael "StrongSide" Cavanaugh.

The change proved to be fruitful, as Final Boss went on to win five of the seven tournaments in 2007, including the National Championships, to close out Halo 2 as the undisputed kings.

Final Boss started Halo 3 out on a good note, winning the inaugural event of the 2008 season, but things went downhill from there.

To kick 2010 off, FearitSelf would rejoin Ogre 2 and Victory X, now accompanied by Anthony "Totz" Pennacchio, for a 3rd-place finish in Orlando.

This lineup finished 8th in Anaheim and again changed with Cloud and Totz, being replaced by Jordan "Amish Acorns" Dotzel and Jacob "Hysteria" Reiser.

When Amish Acorns was swapped with Brian "Legit" Rizzo the team maintained the lineup for two events getting 10th in Orlando and 6th at the Providence National Championships.