How to deal with recoome ult spam?

My brother always plays recoome in splitscreen and he just saves his skill points for insta spark and uses recoome ult.

And I can’t figure out how to avoid it

Things I’ve tried:

Blocking, but it’s unblock able|| Dashing away, but he just chases me to edge of the map(see video)|| Ki blasts, he’s in sparking so it won’t stop him|| Combo him, but he can somehow still pop his ult mid combo||

The only thing I could really do is constantly keep my eye on him the whole battle to catch his 2 second instant sparking animation in time to stop him(and yes it would have to be all the time because as seen in this video he just pulls skill points out of his backside.

This really feels like the type of move that should be a self destruct for how strong it is.

But really I’m sure there has gotta be some way to avoid this right?