Remember when you’d always get upset because you could never dodge Thardis when he was a ball. But then you figured out you gotta use dash? how could you ever dodge a 2D Thardis??? How could you dash in 2D??? 
maybe jump over him?
that’s the only thing I can come up with!
actually,this is aduplicate topic.the other one suggested that thardus bounced when he rolled so you could pass underneath him.
Precisely. That or adding platforms.