In this episode, Barry uses the same electric wheelchair that Wells used.
When Cisco tries to teach Harry how to impersonate Thawne/Wells in an attempt to control Grodd, he asks Harry to say the phrase "In many ways, you've shown me what it's like to have a son." This is actually what "Wells" said when he revealed himself as Thawne to Cisco in "Out of Time (2015)."
The bottles that Vaughn Pharmaceuticals uses to house their serum are ordinary soda syrup containers for a pressurized beverage dispenser.
Gorilla Grodd returns in this episode.
This episode's title is a pun on guerrilla warfare.