When Cody and May are at the Rose's room, there can be found two plastic figures of Leonard "Leo" Caruso and Vincent Moretti the two main characters of Hazelight Studios' previous video game. Their replicas can be heard by pushing the buttons near them.
In the episode of medieval castle appears a doll with a rolling pin which, eventually, drowns in lava referencing to death scene of Arnold Scwartzenegger's character from a movie "Terminator 2: Judgement Day".
While fighting against the Queen of wasps in the hive, there is playing the composition named "Flight of the Bumblebee" by Nikolai Rimsky-Korsakov.
The word "Hakim" , in Arabic language, means a wise man.