What is the best core to beat ninjastu boss in battlestriker

I forgot the name but the ability is shooting stars =) lol i did not even know he was a boss i beat him easy but here is what i did

i attacked him and retreated and did that again. by the way you should check their stats to see their weak and strong points for example Ninjitsu has a weak defense but high control and attack so... you should push him back and retreat before he hits you.

I recommend a high attack and defense for him control should be at least moderate