Suggested by Sonic Dr Wheelo was reasonably strong back in his day, but can’t compete against almost any of the actual DBZ villains. Dabura is certainly no exception as he could win this battle in a single hit. He was able to keep up with Super Saiyan Gohan after all. Wheelo wouldn’t last against a Saiyan in base mode. His robot simply isn’t built for a fight like this. Dabura wins.

Update 7 17 2021, Dr Wheelo’s new Heroes mode would make short work of Dabura. Dr Wheelo wins.