Thanks a bunch, Froth. This is very interesting.
"Apparently, Cyber shares a common past with the mutant adventurer known as Wolverine. Wolverine claims to have once admired Cyber, but the two ultimately had a falling out involving a woman. The two mutants clashed with Cyber emerging as the victor, while the object of their romantic interest was accidentally slain during the conflict. Cyber believed that he had slain Wolverine in this confrontation, but Wolverine survived, albeit psychologically scarred by his defeat."
Sounds a little bit similar to Dog and James.
It's conceivable that Cyber is still alive, but it didn't look like they were counting on it. I hope he comes back. I miss the big ol' lug.