Zell182 said:
I've decided Tsukishima is definitely better than Aizen as an antagonist. He hasn't actually done anything to directly hurt anyone and still seems far more sinister than Aizen did with his stupid "kill the king" plan.
What makes Tsukishima overall better villain is that while Aizen was simply fascinated by Ichigo and tried to make him hate him, Tsukishima without even trying has managed to destroy ichigo's life in very small timeframe.
Tsukishima is not exploding planets or doing crazy stuff, but he is a lot more threatening because of just what he can achieve against protagonist with what he has.