- Angel-Devil Shipping: Ginji and Ban.
- Complete Monster: Takuma Fudou
- Draco in Leather Pants: Kuroudo Akabane
- Dude, Not Funny: About two pages after a not-explicit-but-very-clear flashback explaining that Rena Sendou was raped by both a teacher and her stepfather, Ban runs up and rips the bodice of her dress, exposing the curse mark that will activate if she betrays Lucifer. And her breasts. She's fourteen, by the way.
- Ensemble Darkhorse: Kuroudo Akabane, who's arguably the most popular and admired character in the series. He tends to fluctuate in polls as being ranked #1 and #2 (with Ban or Ginji occasionally overtaking him depending on which one was getting more character development during that particular time period in the manga's serialization).
- And to a certain degree, Juubei Kakei. If only for the trickle-down effect: Ayamine Rando notes that as soon as Toshiki's past was linked to Juubei's, his popularity shot right up.