This episode features references to Blade Runner (1982). In one scene, the assassin speaks in French and quotes Roy Batty's famous speech of the film. In another scene, Jet mentions the Shoulder of Orion and Tannhauser Gate, which were also mentioned in Batty's speech.
The glass case displaying the clown mannequin is branded "Tongpu", which was the Pierrot's real name in the anime.
When asked by Spike why the plan involves rhymes, Jet says he saw it in an old Lee Marvin movie. This is an obvious reference to The Dirty Dozen (1967).