atomicblue on 10 July 2017
Xenoblade, and also Captain Toad, which isn't in the poll. Even if we go by his first appearance in any game (Super Mario Galaxy), he'd still be less than 10 years old.
P.S. Some other ones not mentioned in the poll: Pandora's Tower, Wonderful 101, Captain Rainbow, Endless Ocean, Hotel Dusk, Disaster: Day of Crisis, Style Savvy, Art Academy, Tomodachi, Pushmo/Pullblox, Steel Diver, Boxboy, Code Name: S.T.E.A.M., 1-2-Switch, Tokyo Mirage Sessions. Pretty sure Nintendo owns the IP for those.
