We all know the rumors are false, but what could make them seem true? yoshimansw on YouTube points them out nicely, but he gets a lot of undeserved hate because he's like 12 or 13. Here are some points (add to this list)

- There's Yoshi. There's Mario. There's Luigi. There's Wario. And now....
- Have a SM64DS instruction booklet? Look for the purple rabbit.
- On the title screen, we see red, green, yellow, and purple.
There are a dozen more reasons that I can't think of right now. Personally I only want Waluigi because he's purple (the color of Twilight Sparkle)