Super Smash Bros. Ultimate features every character ever to appear in a Smash Bros. game, plus the debut of Samus nemesis, Ridley, but fans still wanted one more character: Waluigi. The character is not part of the roster so far, but that doesn't mean it can't change before launch. During an interview with Waypoint, Reggie Fils-Aimé talked about the passionate way fans are asking for Waluigi in the game.
"One of the good things about the way we approach E3 is when it's all said and done we step back. We look at all of the feedback and share with the devs and certainly Mr. Sakurai will be aware of the groundswell of support that appeared for a Waluigi. And in the end it's his decision to make."
So it seems Waluigi is not completely out of the question, and it would appear it's up to the game's director whether to include him or not. During the conversation Waluigi was mentioned as Reggie's favorite character in Mario Tennis Aces.
It's an extensive interview, where Reggie also refers how Hollow Knight on Switch is doing exceptionally well, how Nintendo's approach to E3 differs from other publishers, the upcoming Nintendo Switch online service, and more. Head to Waypoint for the full interview.