The prop that falls on Rocky is labeled "Innocuously Heavy Bag," which is a callout to every weirdly heavy yet nonlethal sandbag that has fallen on villians in the history of television and cinema.
Rocky forgetting to fly all the time is what we folks in the animation industry call a Convenient Plot Device.
Real life celebrity Mario Lopez is also famous for playing A.C. Slater on the TV show "Saved by the Bell."
Piotr Michael, the voice of Fearless Leader, was a cast member of the CW's reboot of Mad TV, in which he created original characters as well as celebrity impersonations.
Gordon Ramsay returns as himself to host Le Grand Yum Yum Finale.