Sure, Negan gets into conflicts with the Whisperers. Their encounters add a lot of tension and drama to the comic series. The battles are intense and have major implications for the plot.
Well, Negan first appears in the series as a major antagonist. He has a very distinct personality. He's confident, often to the point of being cocky. His group, the Saviors, would extort other communities for resources. He uses fear as a tool to control those around him. His actions have a huge impact on the other characters in the show, like Rick and his group.
Given the phrase 'simon eyes a christmas story', Simon is just a name. He could be anyone. He might be a student who has been assigned to study Christmas stories. He could also be a local in a small town where Christmas stories are a big part of the community's heritage and he's showing his interest in one such story. Without more context, it's impossible to say for sure.
Since we have little information, Simon in the 'simon eyes christmas story' could be a fictional character created to tell a story about Christmas. He might be a child full of wonder and excitement for the holiday season, or an older person who has a different view on Christmas traditions.
Rick is a very likely character to interact with Negan in hurt Negan fanfiction. Their relationship has been a central part of the original story, and in fanfiction, their interactions could be further explored, especially if Negan is in a 'hurt' state. Another character could be Carl. Carl had his own complex relationship with Negan, and in fanfiction, their dynamic could be developed in new ways.
Well, it depends on your perspective. But generally, Negan is considered bad in the comic because of his cruel and violent actions towards the main characters.