Bippy

For Irvin's tenth time seeing Puffs, he dressed as the devoted (and musical) house-elf Bippy, rocking some pillowcase chic.

Bippy became the first of Irvin's Puffs costumes to be reprised, in May 2018 - Irvin wanted to save the new costumes for seeing the show live, and this gave an excuse to sing the Bippy song (which Irvin had gotten quite good at). Irvin as Bippy was forever immortalized by video of Puffs fans at the movie theater. Irvin also got to indulge his well-honed talent for lying "dead" on the floor, as people cosplayed Wayne and Megan stepped over him repeatedly for photos.

Irvin brought Bippy back for Jessie Cannizzaro's final performance with Puffs, where (per her request) he sang along to Bippy's song from the audience.

Bippy returned for a fourth and final time at the August 2019 reading of PUF3S, because Bippy is the one who discovers the antagonist of that entire show. By this point, Bippy is pretty much Irvin's signature Puffs costume.