Omega Shenron and Vegeta in “Unfinished Business”

Child's play. I'm baffled. How can the two of you be strong when you're fused yet so pitifully weak when you're apart?

It's inconceivable! Making light of two Super Saiyan 4's!

I've been going about this all wrong. I shouldn't be trying to prevent you from fusing. I should just fix it so that it's impossible to fuse! By killing you. (points at Vegeta)

What!?

You would've died sooner or later anyway.