Pikmin - Did You Know Gaming? Feat. JonTron
It's possible that each of the first 5 Pikmin's designs represent the 5 recognized senses:

• Smell: Red Pikmin have visible noses
• Taste: Blue Pikmin have visible mouths
• Sound: Yellow Pikmin have visible ears
• Touch: Purple Pikmin have hairs atop their head, possibly serving as feelers
• Sight: White Pikmin have large eyes.
Contributed by game4brains
Olimar's Japanese name (オリマ Orima) is an anagram of Mario (マリオ). Similarly, Olimar's partner's name, Louie, is based on Luigi.
Contributed by gamemaster1991