Clockwork and Eon can turn into stone someone, stop time, back time
Atomix can shoot nuclear bombs, beams, and Spirit Bomb like orb Y-a-d-a-b-a-d-a-d-o-o, Waybig is fast, huge, can shoot beams and has Ultimate Form
And what about Gravvatack?
Well, if all of them see Toepick's face, they are practically screwed. Unless they attack first, then it's more complicated.
Well let's think for a second here, we have Ben's second most powerful alien, Atomix, vs an alien that can control gravity, Gravattack, vs a big alien that can shoot a cosmic rays, Waybig, vs an alien with a horrific face, Toepick, vs two time aliens, Clockwork and Eon.
I would normally go with Atomix due to the fact that he is the second most powerful alien but we don't know any other powers that Atomix has other than the ones he been shown to have. While Eon can do the typical stuff Clockwork can do, the only powers we've seen him use are the typical time rays and time travel. We seen Clockwork do more like slow time down, create past projections, and can reverse time ripples. Due to Way Big being to big to see Toepick's face I can't see Way Big being affected by it
My opinion Clockwork beats Eon, Toepick scares Clockwork, Waybig stomps Toepick, Atomix takes down Way Big, and Gravattack uses his gravity powers to subdue Atomix. It could end like this or it might end with any of the other aliens winning.
Some possibilities are Toepick defeats all, Way Big defeats everyone, Clockwork uses his time ray to disintigrate the others, or Atomix wins out of all of them. Depends on the scenario