- All There in the Manual: Mr.
- Alternate Universe: Wonderland and 21st century Earth both exist in separate realities.
- Heinz Hybrid: Implied by the presence of Humanoid Nonhuman Hybrids here, though the proportion of the different races in the ancestry of many mixed-race characters are unknown.
- Nonhuman Humanoid Hybrid; Demons, Elves and Cats can have children with each other (as discussed here.
- Notable in-comic examples are Erin/Cupid, the Demon of Love, Bert’s wife, Naria Fortune, etc.
- Immortal Procreation Clause: Demons can live a long time (how long isn’t stated, but Mr. Ego described it as “ridiculously long”), and thus working demons usually only have children when needed for population growth (which isn’t often).
- In Spite of a Nail: Despite having Demons, Elves, and Cats, Wonderland has a lot of similarities to 21st century Earth, including modern technology like cars, guns, TV, computers, etc.
- Our Demons Are Different
- Spin-Off: Has a prequel story called Wonderland.
- What Is This Thing You Call "Love"?: Demons actively working for the Demon Council cannot feel love (at least the romantic kind), this part of the reason Bert left, he wanted to experience it.
- In fact, if a demon experiences love for the first time after leaving the council, it can actually cause ‘’physical pain’’ (see here).
Webcomic / On The Edge
On The Edge is a webcomic by Leisl Adams, about Alice, a human living in Wonderland (which has no other humans), working as a police officer, and her roommate, a fallen demon named Mr. Negative, who used to cause depression but now works as a therapist.