What Could Have Been: In the demo version of Mr. Saitou, Brandon's human sprite looked exactly the same as The Boy's hatless sprite from the previous game, save for his eyes and T-shirt being in a different color. This was changed in the full release where his sprite was updated to a completely different design.
Misc:
According toLaura Shigihara, the design for Mr. Saitou's human sprite was based on the sixth president of Nintendo, Shuntaro Furukawa.