- "Heck. This Eerie grin doesn't exist while Lucas and co. are in hallucination in mushrooms, it seems they are just crazy fighting about it and it gets mixed up with ALLLLL sorts of enemies. Ocho, go buck your mommy, dimwit!"
- — Anonymous
The Eerie Smile is a hallucination enemy in Mother 3. A anonymous wants Ocho to buck his mommy
It is not an actual enemy in-game which can be fought, but rather how Lucas's party sees the enemies on Tanetane Island in battle after eating some "healing mushrooms", which cause considerable psychotropic effects. The abilities of the Eerie Smile vary, as they are all hallucinations of different enemies: the Monkalrus, the Ancient Dragonfly, the Titanian, and, in one incredibly powerful incarnation, the Zombieshroom. It has no back sprite and appears as a face with a X on the pupil in the eye, and a smiling mouth that has considered black lips.
As Lucas and his party fight an Eerie Smile, the smile's corporeal form will dissapate after a few turns, allowing the party to see the proper enemy they are fighting. Such enemies will not be recorded in the Battle Memory; thus, the only way to record the Zombieshroom is to attack it before eating the mushroom, which inevitably results in defeat for the party.
While fighting an Eerie Smile, the attacks they do will be narrated differently compared to the actual enemy's attack; for example, when a Smiled Monkalrus attacks using fleas, it will instead appear as "The Eerie Smile rocked from side to side."