- Complete Monster: SOUGO Tokiwa/Kamen Rider Barlckxs is the leader of Quartzer. Orchestrating the events of Kamen Rider Zi-O, he, after Sougo unlocked Grand Zi-O's power, sent Kagen and Jogen to the Sengoku Era to eliminate Krim Steinbelt's ancestor and thus prevent the creation of the Drive Driver, which would in turn negate the Grand Zi-O Ridewatch. When Black Woz steals Ridewatches and delivers them to SOUGO, he reveals that he was the mastermind behind Sougo's rise and how he used Sougo as a "body double". Defeating Zi-O and imprisoning him SOUGO begins his ultimate plan: to use a portal to smash the World of Zi-O into the world from the first year of Heisei and erase the history of the Kamen Riders, so that he will rule it as King of Time; said plan, if successful, would destroy all life in the multiverse. When Black Woz betrays him, Tokiwa stabs him with his sword.
- Narm: Right before the final kick (during the closeups on the belts), the rapid switches constantly cut off the voices. It only gets worse as it nears the end.
- Narm Charm: Is having the logo of their series behind the Riders during the final kick silly? Yes. Does it make it any less awesome? No.
- Unexpected Character: Being both another Major Crossover movie and part of the series meant to be a sendoff to the Heisei Era, just about all of the main Heisei Kamen Riders return for this movie. Among them, however, we also get the return of the Kamen Sentai Gorider, the title character of Kamen Rider G, and even the 2015 Manga version of Yusuke Godai/Kamen Rider Kuuga along with the original. But the biggest surprise of them all is the inclusion of Kamen Norider. Remember this part of the overall Kamen Rider mythos? No? Well that's because he wasn't even part of it originally. Kamen Norider was an unauthorized parody of Kamen Rider created by owarai duo Tunnels for their television variety and game show "The Tunnels' Thanks to Everyone" from 1988 to 1990, and would later end up trademarked by Toei in 2013. So not only was Kamen Norider an unofficial Kamen Rider at first, he didn't even debut in the Heisei Era in the first place, making him stick out like a sore thumb.
YMMV / Kamen Rider Zi-O: Over Quartzer