- Better on DVD: The series is easier to understand and get into by marathoning. In an Anime News Network review of the first DVD, the writer is glad that the disc includes five episodes. This allowed the viewers to watch enough episodes to get hooked.
- Ho Yay: Sakura and herself. It's complicated.
- Magnificent Bastard: Mamon. The man willingly sacrifices many of his workers from the Super Human League just to convince Kaede to join him. It is later revealed that he already had Kaede conditioned to join him at an early age and that the resources lost were not really necessary. To summon the first Brahman, he sacrifices over 200 of his own workers to charge the linker gel, and sacrifices the summoners and host body to bring in the monster. He later uses himself as a host body for the second Brahman and devises a plan to bring Betterman to him by using Hinoki as bait.
- Narm: Some of Sakura’s lines in the On the Next previews can be unintentionally funny:
Sakura: “Your pancreatic juice is overflowing."
- Protagonist Title Fallacy: While Betterman plays an important role in the show (and constantly saves the day), the main character is Keita.
- Rewatch Bonus: Anyone rewatching the series now knows why Akamatsu is the first to be concerned about Sakura's safety.
- So Okay, It's Average: The series isn’t perfect, with its uninteresting Opening, the confusing technobabble, average voice acting (on both sides of the Pacific), muted color palette, dark lighting, reuse of animation footage, and so on. But the series isn’t horrible, with plenty of strengths that make the show entertaining.
- They Just Didn't Care: The opening credits can cause this reaction, as it shows calm footage of a tidal pool and coral reef, a stark contrast to the actual show. Tech TV actually did away with this opening (and the similar ED for the final episode) entirely - see Woolseyism below.
- Wangst: Several times throughout the series, Hinoki dives right into self-pity and take a looooong swim. She will sometimes do this while right in the middle of a dangerous mission, thereby endangering her own life. It gets to the point where Keita gets fed up and calls her out on this.
- Woobie: Sakura. She's an Ill Girl who has to spend a lot of her time sitting in a machine specially designed to keep her psychic powers from overwhelming her, which means she was never able to go to school or live a normal life like Keita and Hinoki.
- Woolseyism: TechTV replaced the original Opening credits with the Ending sequence when broadcasting Betterman. Considering the opening seems to have nothing to do with the show (it might be a metaphor, somehow), and the ending credits are much more exciting anyway, this was probably for the better.