A Gaggle of Hidden Characters Found Within Tekken Tag Tournament 2

Source: NeoGAF Forums

• Dr. Boskonovitch - a console bonus character in Tekken 3
• Slim Bob - from Bob's Tekken 6 ending 
• Unknown - the final boss in Tekken Tag Tournament 
• Violet (Lee's alter ego) 
• Miharu (a friend of Xiaoyu) 
• Sebastion (Lili's butler)