|Owner|| Marceline (previously)|
|Introduced in||"Memory of a Memory"|
|Last appearance||"Simon and Marcy"|
She loved it ever since she was a child, when she replaced its left eye with a button from her jumper and her last piece of thread. While she was sewing the button onto him, she said, "I'm hurting you because I love you." Ash sold it to a witch to buy a new magic wand (which is a cherry blossom branch), revealing that because the doll was Marceline's favorite thing in the world, it was valuable for making potions. When Marceline found out, she furiously dumped him, shrieking "It's over, you psycho!"
When it was first given to Marceline, as shown in the flashback in the episode "I Remember You," it was red, had two blue buttons for eyes, and a stitched smile. He resembles a sock monkey, due to his long legs and arms. Two more buttons were sewn onto his butt.
In "Memory of a Memory", the toy is much dirtier and is covered with stains, patches, bandages and repair stitches. Some of its limbs have the stuffing sticking out of the toy, and only one button remained as the toy's eye. The toy is extremely faded, but there is still a red tint to Hambo, meaning that Marceline had never sucked the color from him in the many centuries of ownership.