Original Zero is largely the same as in 2001, except he tends to spam his strikers. He doesn't even need to idle to summon them. On the other hand, he doesn't spam his super-move combo anymore.
Fought him yesterday with team Japan surprisingly the only nests boss to take me only 1 try to beat krizalid is just I have to get lucky and clone zero takes me 2 tries on average this guy just only took 1 try for some odd reason.