- Chapter 99: The perverted spectators ogled Rio when she is forced to strip down to her lingerie. When Natsumi is about to be forced to strip next, Yuka volunteers herself in her place. After stripping down and mockingly asks the perverted spectators if they like what they see, the spectators just looked bored and disappointed as to them, "girls stripping without embarrassment is no fun". Needless to say, Yuka was insulted.
- Chapter 102: The "Surprise Guest" of the tournament turns out to be none other than the President of the United States, King Omaha.
- Chapter 113: A Shout-Out from Scooby-Doo quoted by the scam artist that Tomu defeated:
Face Man: Hnngh, and I would have gotten away with it too, if it weren't for you meddling kids and that dumb shoe!
- Chapter 125: Don Romero and Tatsushima Susumu refuses to cooperate to the point where they keep playing the "Courage" cardinstead of "Chicken" card, thus resulting further air decompression. Gokijima can only lament on their stubbornness and pride.
Gokijima: God... Those two are morons...