In the ending of Pikmin 1, you can see onions in more colours than just the three available in the game, like green, cyan, and pink. Later games would feature these colours as actual Pikmin (Glow, Ice and Winged). The existence of an orange onion implies the existence of an orange Pikmin, which is why I included it on this quiz as a pre-filled answer. I’m sure when Pikmin 5 releases in 20 years we’ll finally get to see the elusive Orange Pikmin.