Mother 3 (English) - Porky Bots 

The party is attacked by a group of robots resembling Porky as they finally reach the 100th floor's end.
Lucas should use Offense Up, then attack.
Kumatora should use PK Thunder (It's more effective than PK Ground in this fight) the whole battle.
Duster and Boney should simply attack.
Each robot explodes after dying, so be sure to be liberal in your use of food, healing, and Lifeup.