David Feiss name appears in two episodes. In Happy Baboon Holidays (1997) (season 1) it is written on a wall behind I.R.'s trailer, when we first see it. And once again, in I Am Franken-Weasel (1999) (season 5) Feiss is written on one of the headstones in the cemetery, when I.R. goes to "get a fresh body".
The theme song of the series is a edited version of Pop goes the weasel.
In Latin Spanish dub, the Weasel was voiced by Blas García in the season 1, but the rest of the series the main character is voiced by Víctor Hugo Aguilar.
In Latin Spanish dub, the character of I.R. Baboon is named as Jaimico.