Since his first appearance in The Incredible Hulk in 1974, the clawed mutant Wolverine has become a fan favourite; as one of the most popular X-Men characters, and one of the most popular characters in the entire Marvel Universe.
Wolverine (alias; Logan and Weapon X) was created by Roy Thomas, Len Wein, and John Romita Sr. After proving popular as a supporting character in The Incredible Hulk #181, he became part of what was then the newly-revamped X-Men.
Wolverine would come to define the team of mutants, becoming one of the main characters in almost every X-Men comic since the mid-1970s and and almost every X-Men feature film, even landing a trilogy of solo films (varying immensely in quality).
The gruff and savage persona of the character has stuck a chord with the hearts of millions of fans of comics, TV shows, and films alike. One of the main parts of his appeal is the depth and complexity of character, developed by his countless traumatic experiences over the decades.
Pain is at the core of everything Wolverine says and does; at every turn of his life he has experienced some sort of tremendous blow, and the most emotional of these have induced profound emotions from the readership as well as from the character himself.
For a character with decades worth of depth and torment, it is impossible to encapsulate all of that misery into just ten events, but some moments are just more emotional than others.