Onion was a minor character who only appeared in Excess Cabbage. He was first seen being teased by Cabbage in an attempt to cheer up Orange. However, Cabbage's plan backfired, causing Onion to laugh at him along with Celery and Orange. After Cabbage was knifed, Onion tells Orange that he was sorry about Cabbage's demise. After Orange thanks him for that, he explains that people never know when their time is up, but is interrupted when he is unexpectedly knifed, proving his point. He also made an appearance in Missile Toe being blown up by Orange and his Missile Toe near a car. He made a cameo invisibly in Happy 5th Birtday!.