José Doofenshmirtz

 was the grandfather of Heinz Doofenshmirtz, son (or nephew) of Gretel Doofenshmirtz and the father of Heinz's unnamed father. Gretel passed down the family recipe to him, which, according to Heinz, he is a "Weird Story." He then passed down the Doofenshmirtz Meatloaf recipe to Heinz's Mother ("Meatloaf Surprise").

Background Information

 * He may be from South America, judging from the way he's dressed and his name.
 * His face is almost the same as Doofenshmirtz's except with a mustache, darker hair and darker skin tone.
 * His mustache might have been his trademark feature, as Doofenshmirtz comments that he looks like his grandfather Jose after being zapped by the Mustache-Inator. ("Perry the Actorpus")

Appearances

 * "Meatloaf Surprise"
 * "Perry the Actorpus"