Zoomsday vs. who

Zoomsday = Zoom combined with Doomsday (H/P)

Who (under Skyfather) can beat him?

I cant think of anyone who could do something to him besides maybe bfr and thats iffy,id say he would destroy just about everyone under skyfather level.

Proteus maybe a reality warper? Dragon of the Moon- http://www.marvunapp.com/Appendix3/dragonofmoondef.htm

Right now I can't think of anybody under skyfather.

tyrant(dp),amazo,asgardain destroyer would give him a fight imo

Super-Adaptoid?