- Ascended Meme: Show in episode 13, when Kanegon sees Beta Smash during the clipshow, he freaks out and says Its that scary Red guy! Beta smash has already been compared to Redman before, and this solidified it with a friendly nod to Redmans reputation on the internet as the heartless Kaiju killer.
- Author Existence Failure: Kota Fukihara was the main writer◊ of Ultraman Z since the first two episodes, but with the news of his death in May 18, Kiyotaka Taguchi took over his role as the story editor.
- Creator Cameo: The late Kota Fukihara had a voice role as one of the members of Monster Research Centers in episode 1 who scolded Kaburagi for accidentally tripping one of the drums for Genegarg's remains. He makes his physical role as a researcher in episode 8.
- I Knew It!: A few people suspected Hebikura was actually Juggler, as the two characters have the same actor and the former was acting suspiciously in the first few episodes.
- Real Life Writes the Plot: The scene in episode 11 where Kuriyama was scolding Haruki, everyone except Hebikura can be seen maintaining their distances, implying this was shot sometime after the filming restrictions from COVID-19 took place.
- The Red Stapler: Due to Toyota LQ appearing as STORAGE's Cool Car STEGG, this increases the demand of a toy car of said model from Takara Tomy, Bandai's rival.
- Role Reprise:
- What Could Have Been: A promo that was uploaded to Youtube to build up hype for the show translated Haruki's Catchphrase as "Yep!" instead of "Kay!" for whatever reason.
- Z's Beta Smash transformation had it's mask originally colorless. It was series director Kyotaka Tiguchi that came up with the idea with the face also being painted red.
- You Look Familiar: Takaya Aoyagi, the actor for Jugglus Juggler, appears in this series as STORAGE's captain Shota Hebikura. Subverted when Hebikura is revealed to actually be Juggler, making this a case of Role Reprise instead.
Trivia / Ultraman Z