I think the yellow jacket cartoon guy spy could be a fictional character with unique skills and a mysterious background. Maybe he's good at disguising and has some high-tech gadgets to help him complete his missions.
The reason he's running with a coat might be that he just had an exciting idea and is rushing to put it into action. Or maybe it's a game and he's trying to win by reaching a destination first while wearing the coat for some added challenge.
Maybe the guy with the coat is on a mission or just wants to look stylish. It's hard to say for sure without more context. Sometimes a coat can add mystery or a sense of purpose to a character's appearance.
Joseph in the cartoon is a friendly-looking guy and his coat could be something like a warm and cozy jacket, perhaps with some patches or badges to make it more interesting.
It's hard to say exactly who the yellow guy is without more context. It could be a main character in a kids' show or just a background figure. Different cartoons have different yellow characters.