MC40 The crew of Substitute Princess are known for being a close-knit and fun group. MC40 is part of the band Da Mouth and is always looking to brighten your day. Here he poses with James Wen! JamesWenMc40 MC 40 goes a little further in this one, even sings part of James Wen's newest single with a funky face. I love how down to earth they seem! Did this give you a good laugh? (source: