I'd really like to see the return of Megaman from the original Man Called Nova series. With the Fault opening a rift in space/time, I'd think it'd be easy to have him back.
The entity took him back to the future but perhaps the Fault caused him to reappear in current time. :)
hhhh....however, given his somewhat limited power scope, he wouldn't be much of a challenge to the current Nova. Not unless he got a power boost from the Fault! :)