How do you defeat master tecnis core on ben 10 omniveres?

Because his name is Ben Tennyson and he can transform into 10 different aliens. But now he ca turn into like 20 different monsters.

first Ben has 10 aliens, his las name is Tennyson and the whole Ben ten rhyming thing going on plus hes 10 years old...thus Ben 10 (catchy right)

It was called "Back with a veangence".

you don't, you don't fight yourself

titi pepe kik tete