Ms. Paint

Ms. Paint is a citizen of Prospit and, secretly, the true star of MS Paint Adventures. She first came about when Ryan North, creator of Dinosaur Comics, asked Andrew Hussie "who is Ms. Paint and why has she not shown up in her own Adventures".

She hasn't done much yet, besides staring at Dream Jade and standing next to White Queen just before the destruction of Prospit, but we all know she'll totally turn out to be the most important character of all.