Buffy The Vampire Slayer: 10 Most Underused Characters
4. Willy The Snitch
Willy the Snitch first appeared in the second season, and had brief roles in both seasons three and four. He ran a bar - Willy's Place - which catered to the vampires and demons of Sunnydale, giving him an all-access pass to the various supernatural goings-on around town.
With his social awkwardness and pathetic selfishness, Willy was funny to watch during his brief stint on the show, but his link to the demon underworld made him a great opportunity for worldbuilding. He (often unwillingly) helped Buffy and the gang out a bunch of times, and could easily have stuck around for a while longer to add some more depth to the show.
He could, for example, have continued to help them out, and maybe have played a role in Spike's days as a vampire unable to hurt people, wallowing in self-pity and playing kitten poker. But he simply disappeared after season four, and despite being mentioned a few more times, was never seen again.
What a shame.