just not a main bad guy
Sol Badguy confirmed
Since EX fighting layer is done with Bamco and very close to Tekken, I'd say Kairi but he's too close to Gouki so Garuda would probably work.
If I struggled to the end of my determination, to the end of my way of life with my followers, if the result is ruin, then this ruin is inevitable. Grieve. Shed tears. But you cannot regret.