The most commonly grown beans are the green, or snap, bean and the yellow, or wax, bean, which is a variety of the green bean.
Zero (real name David Oh, and formerly known as O, Major Tom, Major Zero and Cipher) was the original commander of CIA Special Forces Unit FOX (Force Operation X). After Zero became a founding member of the Patriots along with Big Boss, the two friends would later develop a bitter enmity.
Yuki and Zero met at ages 11 and 12 respectively, when Zero was taken in by Kaien Cross into his home. Yuki immediately took to the young boy and looked after him the night they met, cleaning the emotionally fragile Zero's wounds.