There are 5 artists and or groups with this name. 1) Tom 'TKO' Owens is an Australian hip-hop artist from Newcastle, Australia and currently taking the scene by storm. 2) A Seattle based hard rock/heavy metal band formed in 1977 Brad Sinsel formed TKO in 1977 with Rick Pierce. Two years later, TKO released its debut LP, Let It Roll, and by 1981, the band was headlining shows at Seattle and touring as the opening act for AC/DC, Van Halen, Heart, The Kinks and Cheap Trick.