One aspect of Yondu's human behavior in fanfiction is his relationship with Peter Quill. Fanfic writers might depict Yondu as a father figure in a more detailed way. They could write about how he teaches Quill about his heritage, not just through tough love like in the movies, but also through more patient mentoring, which gives a new dimension to their bond.
Yondu does meet his end in the comic books. It's a plot point that brings about various consequences and emotional responses among the other characters.