The episode is dedicated to Ron Leibman. He voiced Ron Cadillac and was married to Jessica Walter. He died in December of 2019.
This episode is an homage to Bloodsport (1988). The room the fights are held in is similar, and the second fighter Cyril fights is similar to Chong Li.
In The Orpheus Gambit (2020), it is discussed they don't "sploosh" anymore. The title of this episode is "Bloodsploosh".
The Kumite, once illegal and underground, is now practiced as Ultimate Fighters, enjoyed the world over.