This work speaks for itself: - Excellent color selection and contrast, nothing to hide; - Two characters, two companies, two rivals fighting... that's so epic, fighting for who is the best, what could be better than that?; - There's some details, like the shoe's zip of Sonic is suppose to be rectangular and hollow, but the work is so impactful that we can ignore them; - The background makes us feel the intension of the battle, that there's not just a simple battle, but it's for the honor. I can't say more, I love this work and, as I said before, this work speaks for itself! Congratulations, *Haychel! If I have to give you a grade, an A++ (or 10, or 100) wouldn't be enough. Keep it up!
I disagree on the pallette thing. I think it's how in their first games, they never said anything, so you got to completly invent their personalities. Then, in later games, they both have great personalities, but which only show up in some games. (Ex: NSMB has no personality, even though it's new.) This means that it started out well, and got even better, matching the preferences of more people. Plus, overall, they're both just plain awesome.