A square-shaped kid is trapped inside a mail package.
The b name is a pun on the phrase "handle with care", which is often stamped on packages that contain fragile contents.
Marcel Parcel makes an appearance in the Garbage Pail Kids Animated Series in the episode Chris Messin' August. He appears before the Garbage Pail Kids to explain to them the plans of Chris Mess, Meltin' Elton, and Yul Tied. He mentions that he used to be one of Chris Mess's minions, but has decided to change sides due to being outraged by his evil scheme.