- Alternative Character Interpretation: Is Shiki gay, or is he treating Shuto as if he was a puppy?
- Ho Yay: The way Shiki acts around Shuuto could be seen as either flirting (which seems to be how Mirea takes it) or like how he treats small animals.
- Ensemble Dark Horse: The Jacky Combatants, full stop. Whilst Shuuto and JACKAL provide most of the drama and plot progression, the Jackies are collectively Funny Background Event, Crouching Moron, Hidden Badass, and Spotlight-Stealing Squad all in one.
- So much that many fans will comment on them being the true heroes of the story, especially how they were instrumental in breaking Ratman out of his strongest berserker state in the finale.
- Nightmare Fuel: Ratman's various more powerful forms (even just opening his mouth and revealing way too many sharp teeth) are not for the faint of heart. Rio has trouble sleeping after running into one of the tamer versions.
- Unchain killing and eating a hideous chimera...complete with way more blood and gore (and a loose eyeball!) than the manga had ever shown. Just...Unchain's eating habits.
- Unintentionally Unsympathetic: Shikis story about spending the majority of his life locked up because of his superpowers at first comes across as sad especially since he uses it to invoke Humans Are the Real Monsters. However when we find out what really happened he becomes this. While it is true that his parents did become afraid and distance after they found out about them they were also doing what ever they could to help him control them such as sending him to a psychologist to help him with control. The reason that he ended up locked up was that the first time someone said something he didnt like he ended up killing them. This makes it seems like he just isnt willing to except responsibility especially since hes developed an A God I Am Not type personality. Its symbolic that he connects with animals that were sent to shelters after theyd attacked someone.
- What an Idiot!: The man that took Fatmans sister hostage did so by sitting next to her and holding a knife to her face. A simple jump to the right would have gotten her out of danger.
- The drug dealer who decided to transport his drugs by hiding them inside the most popular toy in Japan.
YMMV / Ratman