Goopy is a blue slime with a small red nose and a point on top. He is typically limbless, but his intro animation gives him an arm with a white glove on his hand. During Phase 2, Goopy grows to double his normal size and gains a pair of thick, brown eyebrows, and his arm now has a red boxing glove. In his final form, he manifests as an angry face on a grey gravestone with a cross on top, displaying the term "RIP" (Rest In Peace). Goopy also has eyebrows in his tombstone's inscription.