Grated Yammonster

Grated Yammonsters are enemies in Mother 3. They replace the Yammonster and Baked Yammonster enemies in Sunshine Forest beginning in Chapter 4; like the easier versions, Grated Yammonsters do not move on the overworld.

In-battle, Grated Yammonsters can attack using PSI, and are extremely dangerous for Lucas and Boney should they be encountered early in Chapter 4. However, they are significantly weaker in comparison his party by later chapters. They are very weak to PK Fire.

Battle Memory description
"A rustic combination of a baked yam and a toy helicopter. It grates its body and sends gunk flying."