Infinite of Sonic Forces infamy, takes on Jiren the Grey of Universe 11's Pride Trooper Corps, but here is the twist (since we all know that Jiren would absolutely MURDER Infinite in a regular combat scenario):
Infinite tries the full range of his powers on Jiren, but Jiren is not allowed to (initially) retaliate. however, if Infinite's attacks and powers have no effect on Jiren/aren't able to put him down, then he is allowed to do whatever the hell he wants to Infinite.
What happens?
In Sonic Forces, spoilers:end of spoilers
Infinite is bound with the finalized Phantom Ruby Prototype, which can (among many other things) can induce a virtual reality so potent (in other words, the Phantom Ruby's power affects the brain to that extent) that any injuries that the victim would suffer in the virtual reality would actually manifest itself on the victim's body in the real world.