[s3e13] The Zeppo «90% Full»

Feeling inadequate, Xander goes on his own solo "adventure" which involves:

While Buffy and the rest of the "Scooby Gang" are embroiled in a world-ending apocalypse involving the and a demon called the Sisterhood of Jhe, Xander is told by Cordelia that he is the "Zeppo" of the group—the one who doesn't contribute and is just there for comedic relief. [S3E13] The Zeppo

Meeting Jack O'Toole, a delinquent who turns out to be leading a group of zombies. Feeling inadequate, Xander goes on his own solo

If you are doing a full series binge, "The Zeppo" sits in the middle of Season 3, right before the show ramps up for the ascension arc. It is often listed in Buffy Watch Guides as a "must-watch" standalone episode. It is often listed in Buffy Watch Guides

A surprising and pivotal sexual encounter with the Slayer, Faith .

Xander eventually stops the bomb and Jack’s gang entirely on his own, without the rest of the gang ever knowing what happened. Why It's a Fan Favorite