When: * * Last week, she was promoting her new album, Born Yesterday. * Yes, I saw the posters all over Monstro City. Who Buster sense some Foul play Baby Rox is known for having the most powerful voice in Monstro City. Where she now Simon Growl is looking after her, at Growl Mansion. "He got his roarkers to build a dressing room for her at the very top of his mansion.