Here are some groupchat usernames I would make up for my OCs if they had a groupchat themselves.

Karmen-BikerBartender

Tenki-TechKi/TwinBrotherFucker

Blake-EyepatchPyscho

Jasmine-GuitarBitch/JUST TAKE EVERYONE TO THERAPY

Tyler-DJGreenie

Cerise-Transhionista/Mybestiefuckedyourtwin

Kacy-PinkieKitty/BikersBabysister

Racoon/River-Fiore.02

Milo/Miles-MagicisMarvelous🪄

Marco-IHateNicksParents

Tyson-Paintmelikeyourfrenchparties

Michelle-PARTEHTIMEEE

Bea-Creepygirl

Matthew-LonghairFootballer

Leilani-LustyActWhore

Hope you like it