They are all Evil. They all want to find C, F, I, J, K, U, V, and X because @ghotimongermadness doesn't use C, F, I, J, K, U, V, and X. (Note: Of course, this is supposed to take place in the past.) (If you don't know Super Mario, don't scroll down) O, P, Q, R, S, T, and W are very similar to the Koopalings. O is Lemmy, P is Wendy, Q is Iggy, R is Larry, S is Morton, T is Roy, and W is Ludwig.
