Omega Red

Here is a supervillain long overdue "“ Omega Red is a foe worthy of Wolverine. He has, basically, the answer to Wolverine's regenerative abilities. He needs to suck his vital energy, and so he will!

In a way, he would be the result of a Russian Weapon X program. And Mister Sinister could also be his creator. I have no idea where he could be worked into an Old Man Logan adaptation for the big screen, but he should be squeezed in somewhere.

Unless he pops up as a villain for X-23 in some future movie, this is his last chance to face Wolverine. And it shouldn't go to waste.