Amid the Balloon Boys, Kate Gosselins and Brunos in yellow leiderhosen last night on Santa Monica Boulevard were a few knock-out costumes that stopped traffic—this foam-quilled porcupine being one of them. Loved that this mystery man periodically rolled into a ball on SMB to fend off his Halloween predators. Feel free to send us photos of your fave looks from last night: email to editors@stylesectionla.com.