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- When Shadowy Figure and K.O. are fighting, Shadowy Figure drops a line suggesting that he isn't working alone.
- However, he could have been talking about himself in third person.
- When K.O. is about to knock down the door, an instrumental version of the pilot's theme song can be heard.
- K.O. and Rad mentions events from "T.K.O.".
- The episode mentions the The Sandwich Incident from "We Messed Up", "Know Your Mom", and "Face Your Fears".
- Enid's voice changes to resemble Harley Quinn's when she asks "What's up Mistah G?" to Mr. Gar.
- The scene where Shadowy counters and kicks K.O. away is very similar to the same fight scene between Kid Goku and Mercenary Tao, where Tao dodges Goku's attacks and kicks him away with his hands behind his back.
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