User blog comment:Blinkn/Did Mystique cry for Nightcrawler?/@comment-4590769-20120630224427/@comment-821254-20120701000749

Good question! I think his brother is dead though, so Rogue is the only "sibling" he had left alive and his alternate reality daughter Nocturne, not sure where she got to, wasn't she pregnant?

I am really interested in the strange family units in Marvel. Parents, siblings, and children from alternate realities, magical incarnations, artificial intelligences, previously unrevealed and thought dead.

Its a shame they don't explore this more, IMO, like in Children's Crusade. Look at the Summers and Pym family trees. Loaded with a unique family members and connections.