• He apparently has a background with Timmy, as he appears to have hated him straight from his debut episode. Yet, Cosmo does not seem to know him.
  • In "Go Young, West Man!, it seems that Horace Shallowgrave has a type of hook that only brings back kids dead rather than alive (which costs extra.) Principal Waxelplax found some extra money in the budget to pay for it.
  • Shallowgrave was completely absent from the show from Season 5 before appearing again in Season 9, one of the longest times between appearances for a character on the show.

Community content is available under CC-BY-SA unless otherwise noted.