|Appears in||Mother 3|
|Vulnerable to||PK Freeze|
|Location||King P's room in Thunder Tower|
|In-battle theme||Piggy Something|
- "More than anything, it lives to terrify people. It sometimes startles itself and bursts into laughter."
- — Battle Memory
The Surprise Box is an enemy encountered in Mother 3. It can only be fought once in King P's room in the Thunder Tower. Before Lucas and co. interact with it, it appears to be an immobile Gift box similar to the other two in the room. However, when it is provoked, it pops out of the box and initiates battle.
The Surprise Box is one of many enemies with unused back sprites.
The Surprise Box uses standard attacks and forgetfulness-inducing flashes; it also has access to PK Fire β. It may occasionally waste turns being surprised. Its theme is Piggy Something It is classified as a mechanical enemy, making it vulnerable to Saltwater Guns.