YMMV / Ultraseven X

• Anti-Climax Boss: Most of the monsters were defeated very quickly when they appear. The challenge in most episodes is in actually finding them. This includes the final boss, which is actually a large group of subterranean giant insects. Once his consciousness awakens, Seven proceeds to destroy them in less than 5 minutes. Justified, as Seven is an Outside-Context Problem and the native alien invaders are less prepared for dealing with him than is normally the case.
• Complete Monster: Peginera ("Parasitic Space Creature"), from episode 4 ""DIAMOND "S"", is one of the worst alien invaders ever investigated by DEUS. Desiring to adapt to Earth's atmosphere with a new body that would allow it to conquer the planet, Peginera splits its own cells into countless parasites and takes over the entire staff of Nano Cybertech, tainting their most popular product with its cells to infect thousands more, even children. Those who refused to submit to the Hive Mind have their bodies turned into mummified husks, with Peginera itself coldly seeing this horrible demise as a form of punishment. A sadistic, cruel being that managed to stand out in one of the darkest installments of the franchise, Peginera wasted no time in causing destruction once it finally got a body.
• Fridge Brilliance: The Reveal that Ultraseven X is the original Ultraseven makes the frequent Curbstomp Battles make sense. He's from an alternate universe, in this one he's an Outside-Context Problem. Ultras don't exist in that universe, so the aliens have no need to be prepared for them, while stopping alien invasions is Seven's (and any other Ultra worth his salt's) day job. Of course Seven has the advantage.
• What Do You Mean, It's Not for Kids?: After learning the mistakes from Ultraman Nexus, Ultraseven X becomes more adult-oriented and darker for modern Heisei-era Ultraman viewers.