This is the first time Breach has spoken since "Breach".
Rex debuts a new "build" called the Block Party, which are a smaller, modified version of the Smack Hands, mainly used for self defense.
This is the second episode of Generator Rex to be accidentally leaked on Cartoon Network's website before it aired on TV.
This is Tuck, Cricket and Quarry's second appearance since "Rabble".
The skyscraper laboratory where the molecular destabilizer was being kept is the very same one that was seen in the beginning of "Dark Passage".