Fluffy Pants Doofenshmirtz
Gender: Male
Age: Older than Doofenshmirtz
Nationality: Druelselstenien
Hometown: Gimmelshtump
Friends and Family
José Doofenshmirtz (father)
Mr. Doofenshmirtz (Brother)
Justin Doofenshmirtz (Brother)
Gertrude's father or mother (or brother's sibling-in-law)
Narthelliot's father or mother (or brother's sibling-in-law)
Simpkin (or brother's sibling-in-law)
Boris (or brother's sibling-in-law)
Gretel Doofenshmirtz (grandmother)
Nephews and Nieces:
Heinz Doofenshmirtz (nephew)
Roger Doofenshmirtz (nephew)
Gertrude (possibly niece or brother's niece)
Narthelliot (possibly niece or brother's niece)
Vanessa Doofenshmirtz (Grand-niece)
Heinz Doofenshmirtz's mother
Great grandfather:
Jekyll Doofenshmirtz
Behind the Scenes
First Appearance:
  "Spa Day"
Last Appearance:
  "Spa Day"

Fluffy Pants Doofenshmirtz is the uncle of Heinz Doofenshmirtz and Roger Doofenshmirtz, and brother of Mr. Doofenshmirtz. Heinz named a cat he found after him. ("Spa Day") Strangely enough, Fluffy Pants didn't ever wear pants, but did seem to have oddly-shaped fluffy hair.

Background Information

  • It is unknown how he got his name since Heinz claimed that he never wore pants.
  • He is possibly deceased.
  • He is one of the people in the Doofenshmirtz Family that does not have the same looking head as Heinz.
  • He resembles the real-life German philosopher Arthur Schopenhauer.


  • "Spa Day" (First appearance) (Cameo)
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