- Alternate Character Interpretation: Belial's treatment towards Geed: Did he see his son as a mere tool of success like his servant Kei or has a genuine fatherly love despite portraying it in a bad example? Or does Belial only treat Geed the way he does because Belial is a selfish psychopath who only loves himself and Geed happens to be made from his own DNA?
- Was Belial always going to backstab Kei, or did he decide to do so after Kei accidentally stabbed him while he was killing Arie? There's evidence for both sides.
- Complete Monster: Ultraman Belial has somehow gotten worse. The first thing he does in this series, during his fourth attack on the Land of Light, is defeat all the Ultramen before setting off a bomb that would wipe out all life in their universe. However this was a Xanatos Gambit: either Belial kills them all and gets his revenge, or he gets Ultraman King out of the picture. The latter happens, and Belial then hides out in space, plotting his next move. Belial plans on making himself invincible by eating Geed alive and leeching power from him like a battery. When that fails due to Geed's strong willpower, he chooses to mind control his son into becoming a loyal slave. Geed escapes and Belial loses their fight, only to come back by possessing an innocent woman and using her as a puppet while manipulating his own loyal servant, Fukuide Kei, into fighting for him. Upon finding that Kei is of no further use to him, Belial rips out Kei's Sturm Organhis power source and vital organand eats it in front of him, cackling about how Kei will be dead in days without it. During the final battle, Geed attempts to reason with his father, all but begging him to let go of his evil. Belial responds by trying to kill him one last time, demonstrating he is beyond all help.
- Ensemble Dark Horse: King Galactron was meant to be stageshow exclusive Belial Fusion Monster but it went on to receive a lot of popularity, so much that it appeared in episode 22 of the original series as a suit!
- Evil Is Cool: The Belial Fusion Monsters, including Belial's Fusion Rise as Chimeraberos and Belial Atrocious.
- Fan-Preferred Couple: Riku and Laiha, although the latter made it clear that she saw Riku as Platonic Life-Partners.
- Friendly Fandoms: With Kamen Rider Build, as both of their gimmicks are almost the same.
- Harsher in Hindsight:
- Arc Villain Kei Fukuide wrote his novels about Zero and Belial's conflict, with their roles as heroes and villains reversed. Although the filming is evidently made earlier, prior to the series Chinese company Blue Arc studios and Tiga Productions created a literal bootleg of an Ultraman movie, Dragon Force: So Long Ultraman. This was taken further when Ultraman's role in that film is a villain, suffering much like Zero was in Geed.
- Belial was revealed to be somewhat more complex. His entire motivation to attack the Land of Light was made purely out of revenge for his banishment. Makes you wondering if all the Complete Monster traits that he went through in his past appearances were a facade.
- Hilarious in Hindsight:
- In 2009, the Ultra Warriors and monsters of Mega Monster Battle: Ultra Galaxy Legends made their cameo appearance in Mecha-Mecha Iketeru! Japanese reality TV. Belial also appears in that show, where his voice actor Hiroyuki Miyasako (speaking through Belial nonetheless) proclaims himself to be a family man, married and have a child. Come along 2017 as Geed focuses as the son of Belial.
- Episode 11 features the death of Kei Fukuide's editor. The day this episode was aired is the 34th birthday of actor Kenji Masaki, who portrayed the aforementioned editor.
- Heartwarming in Hindsight:
- Ho Yay: Kei Fukuide's admiration for Belial is seen to be this. The fact that Belial possess the nonfiction writer Arie, who displays affection for Kei doesn't help as it seems that Belial reciprocated his minion's feelings.
- It's the Same, Now It Sucks!: Certain people's opinion on Geed, some believe that the repetition of Orb's Fusion gimmick is this.
- Just Here for Godzilla: Non-fight scene example: at least for several Love Live! fans, they (occasionally) watched the show for Suzuko Mimori's performance as RE.M. and her physical human-like android appearance in the 19th Episode.
- Memetic Mutation:
- Acro Fusmassher (アクロ襖ッシャー, Acro Sliding Door Smasher): Explanation
- With the aforementioned similar gimmick to Fullbottles, some even went to shake their Ultra Capsules with no effort.
- Most Wonderful Sound: One can hear the classic Ultra Beam SFX in the Strike Boost finisher.
- Oddball in the Series: The series breaks two unwritten rules of the franchise in the first four episodes alone. One of Riku's potential love interests learns his identity in the first few moments they meet, and multiple Ultras have familial ties.
- Paranoia Fuel: As of Episode #11, we know that Belial is floating around in space somewhere recovering his strength and awaiting whatever his plan is to come to fruition. We just don't know where.
- Tough Act to Follow: Ultraman Orb was received extremely well by fans on both sides of the Pacific, especially Hideo Ishiguro's performance as Gai Kurenai. The jury is still out on Geed's reception, with some not finding Riku to be as good a protagonist and the early episodes lacking.
- The Woobie: An in-universe example goes to Ultraman Belial, of all people, who spends his entire life haunted by revenge against the Ultras of the Land of Light for his banishment, despite wanting to let go of it. Riku apparently gives him a hug and in response, the Rayblood that assimilated with him was expelled.
- WTH, Casting Agency?: There was some pre-show disdain from some Riku was being played by a high schooler after Ultraman Orb returned to having actors in their 20s and 30s play the lead.
YMMV / Ultraman Geed