User blog comment:TheToughGuy/BULLY: THE UNDEAD STORY--Chapter 26/@comment-5385060-20151130115958/@comment-5385060-20151130160054

Either is good. "The Undead Side-Stories" does have quite a ring to it. But Bully: The Undead Side-Stories fits well, because it is part of the story. Though, if you think you should drop the "Bully" part, go for it.