On-disc data for six unannounced characters has been found on Tekken Tag Tournament 2’s game disc, according to Shoryuken.

The characters are Miharu Hirano (Ling Xiaoyu’s best friend and Tekken 4 palette swap), Doctor Boskonovitch (Tekken 3), Slim Bob (from Bob’s Tekken 6 ending), Sebastian (Lili’s butler), Violet (Lee Chaolan’s alter ego from Tekken 4), and Unknown (Tekken Tag Tournament).

The discovery of the hidden characters raises the spectre of on-disc DLC, an addition that infuriated many fans when it debuted in Capcom’s Street Fighter X Tekken earlier this year.

However, Namco has previously said that all Tekken Tag Tournament 2 DLC would be free.

The game is out on PlayStation 3 and Xbox 360 on September 13.