* Any of the surrogate father relationships he shares with his (typically young and female) sidekicks can be this, but the topper probably goes to adopting his troubled OppositeSexClone {{X-23}} as his legal daughter.
* His friendship with Nightcrawler is truly amazing. Kurt is one of the very few people he has said a genuine "I love you" to. [[spoiler: Kurt's death proves that if you ''really'' want to give him the WoundThatWillNotHeal, you kill the Elf. When you kill him you injure his ''soul''.]]
* He is always present for the funeral of a friend or acquaintance. Doesn't matter if they have healing factors, or if they come back to life more than once; if they die, he goes to the funeral.