This episode features the return of the Woolies, the Three Blind Archers, Olivia and the Ravers, Da Samurai, and Demongo; there is also a Spartan warrior in Da Samurai's bar.
The three dogs that Scaramouche picks a fight with are Big Dog (2 Stupid Dogs), Spike Bulldog (Tom & Jerry) and Astro (The Jetsons). All three are from shows made by Hanna-Barbera Productions.
There's a cameo of Popeye the Sailor, in a robotic form. Genndy Tartakovsky was once attached to direct a new Popeye film with Sony Animation Studios, but in 2015 Tartakovsky dropped out the project.