|Appears in||Mother 3|
|Drops||Mosquito Charm 100%|
|Vulnerable to||PK Fire, PK Freeze|
|Location||Pork Bean Tunnel|
|In-battle theme||Back Beat Battle|
- "If you rub your eyes after touching this guy, your legs will turn to goo. Be sure to wash your hands." - Battle Memory
Although a nearby sign discourages the use of bombs inside the tunnel, it is almost necessary for Salsa or Fassad to use one in order to defeat them. A present with a Running Bomb inside is generously provided nearby.
Its battle sound is Battle Sound 9 which falls under Code Numbers 463 for regular attack, 464 for Smaaaash! and 465 for Miss.
- The Gooey Goo is one of many enemies in the game with an unused back sprite.
- The Gooey Goo will attempt to "split" or multiply as a last defense.