Who should I upgrade?

This is my roster, who should I upgrade?

Comments

I don't know why it put the pictures in such a weird order.

Onslaught, scorp, Kate

It'll take a long time to get the t6b and t3a, but I'll do it. Are there any 6 star rank 1s that are worth upgrading?

BWCV is amazing. I used her for Act 7-9.1

CHAVEZ!