A Mecha-Porky is a robot built in the likeness of Porky Minch. They resemble his more youthful form, though they wear different outfits then what he wore. Lucas, Kumatora, Duster, and Boney encounter a Mecha-Porky claiming to be Porky himself, before suddenly exploding. Then ten more Mecha-Porkies show up and Lucas and co. have to fight them off. When it seemed as though they would just keep coming, the DCMC band members showed up to rescue them causing the Mecha-Porkys to be destroyed.
Mecha-Porkies also appear in Super Smash Bros. Brawl, as one of Porky's attacks.