Which 5 star to r4?

Jtarun

ThatGuyYouSaw235

Either Venom or Emma

Venom has his Om Nom and control over what buffs he generates or to just reset if you screw up, with his really hard to evade Special 2

Then there's Emma with her Prowess and her Special 2 which happens to be a very spicy meatball along with Diamond Form and her newfound ability to make people mentally sit on a hemorrhoid on defense with her Reverse Controls and very nichè Diamond Form

Nebula is good but isn't exactly R4 material