Yellow

The embodiment of justice, always ready to put a criminell behind bars (even when it's himself).

I feel a southern accent is right for this, but for Yellow, you need to be able to switch between goofy and serious easily.

I kind of want a country singer vibe to the voice when singing, since most of the time during the battle, Yellow is portrayed as serious. It doesn't matter what you sing, just show off your voice!