One thing Street Fighter X Tekken was missing was a comeback mechanic, an equivalent of Street Fighter IV's Ultra combo and Marvel Vs Capcom 3's X-Factor, which gives inexperienced players a leg up while adding a further layer of complexity for the hardcore. This new trailer reveals Pandora mode, in which one fighter is sacrificed to give the other a power boost, though in a game in which success appears to be hugely dependent on tag combos it may be as much of a hindrance as a help. Also confirmed are four-player online battles, an online training mode, and new characters Zangief, Rolento, Heihachi and Lili. Meanwhile, Andriasang reports that as well as Infamous protagonist Cole McGrath, the PS3 and Vita releases of the game will also include Sony mascots Toro and Kuro.