Snap pick for Link. As someone who had graduated from high school when Pokemon RBY released, and missed the whole cartoon, it blows my mind that Pikachu could even be in consideration here. Not saying it isn't accurate. Just that I'm too old and uninvested in Pokemon to ever give the rat a thought. I'd sooner give credence to Luigi, albeit if you ask me the question out loud, I'm going to go, "Besides Mario? Oh, so what else does Nintendo have?" and overlook Mario properties. The first place I'm going to land is LoZ.
Only the exceptions can be exceptional.