The Fortress of Friendship contains many references to previous episodes. There is Beast Blast energy drink and monster potion from the Moosebumps story arc, Rocky's recorder from the Almost Famoose story arc, the rock sceptor from RBW107, the Best Friends Forever poster and bee hive from the Almost Famoose Arc, the Le Grande Yum Yum Trophy and luggage from the Stink of Fear arc (as well as Rocky's nut collecting slide), Qwerf from the Dark Side of the Moose arc, and more.
Now anytime Long Tom Lobster has a new password, he carves it in the wood next to the steering wheel of his pirate ship. His latest password is "Ah0yMat3y!" which he uses for the online pet store where he buys bird seed for his parrot.
Fearless Leader also considered naming the belt "The Evil Gem Combo Belt" or "Fred".
Factwinkle! The word merge become popular in mid 17th century based on the Latin mergere which means "to dip" or "plunge".
The Act Break "Bullwinkle's Corner" where he reads Little Miss Muffet is an homage to the original series, where Bullwinkle reads the same story.