Alrick the Fizzarolli fan

Arick first approaches Fizzarolli on a dimly lit street, coming on way too strong and ignoring all the obvious signs he's making Fizz uncomfortable, then throws a tantrum when he's understandably rejected. He spends the rest of his years, becoming an increasingly unhinged and bitter fan, despite now resenting him. Even threatening to kill him, until Blitzo steps in to finally kill him.

Example of:
Abhorrent Admirer