This monster is based on the classic nursery rhyme character Humpty Dumpty, a character typically represented as an anthropomorphic egg who falls from a wall and shatters (hence why it has 0 defense). This monster's Zombie-Type implies that this may actually be a resurrected Humpty Dumpty after his fall.
This monster is very similar to the "Ghostrick" monsters; specifically, it has the characteristic effect: Once per turn: You can flip this card into face-down Defense Position. It is also a DARK Zombie-Type monster that is Level 3; all "Ghostrick" monsters are DARK, and all "Ghostrick" Zombie-Type monsters have the archetype characteristic of being Level 3 (the exception being "Ghostrick Alucard", as it is Rank 3 instead).
This monster slightly resembles "Ojama King," having a similar round white body and exaggerated, garish facial features.