Beppi is a small supporting role. He's part of the Carnival Trio.

He is a balloon. He's a total silly goofy guy, just wants to have a good time. Hes also very innocent, and has little to no social filter. He has a tendency to not read a room. And when things stop being fun, he ceases to function, falling into complete denial. He copes with just wanting to have fun, to escape the horrors the killing game brings. This literal balloon guy is not fragile, far from it, but he needs a lot of time to recover when something pops his heart.

Voice headcannon is anything you'd like. I have no idea what to do with him. Go crazy, go stupid, go ham. Medium high voice likely.

(Maybe not too stupid. Despite being a clown, he still has his serious and deeply emotional moments)