More like an antiheroic deuteragonist-sometimes-antagonist than a villain but that will never be a dressup and I'm tired of waiting for a chance to post this.
Anyways, it's Komaeda Nagito. I tried to put as much relevant stuff from the game in as I could. The T-shirt was a challenge to construct, since due to the line-edited neck fur I couldn't just use an actual shirt item. I spent a good while working on this and went back to alter things several times, so I hope it looks good as a result! I had fun and am satisfied. Definitely one of my higher-effort dressups. Virtual pet cosplay is fun.