Kirby Air Ride, he quit working with HAL because he didn't like the way HAL was set up. He still does some work for Kirby in the Super Smash Bros. series.
- Masahiro lives in an apartment with cats.
- "Masa Sakurai" is the spelling for his name in Kirby's Dream Land's credits.
- He has no idea of how he thought of Kirby's name. None of the HAL staff knows how they thought of the name. Someone named John Kirby helped Nintendo stop Universal Pictures from suing them when they made Donkey Kong, but he said that this is not how he thought of the name. He said that is was probably the "Kirby Vacuum" that gave them the idea.
- Masahiro argued with Shigeru Miyamoto over Kirby's color. Masahiro Sakurai wanted him to be pink and Shigeru Miyamoto wanted him to be yellow. Sakurai won, so Kirby became Pink.