Talk:Monster Girl Quest: Paradox/@comment-27333620-20150106024004/@comment-25927979-20150106190909

Even if they look similar Imp and Succubi can't be relatives in an evolutionary sense or something like that since existence of MGs's races started with transformation of all original monsters (creatures eating humans) into various forms of women through thing called "Dark Matter". That way it's also possible to transform humans into any kind of monster girl, so origin of certain species comes from nowhere (or comes from Dark Matter if you prefer).

The same happens in Monster Girl Quest - all monsters were primitive organisms before being mutated with Alice's "darkness" and then taking some form. Don't forget that they always feed on human's semen so it's not possible for new species to appear (only to extinct like that ancient seaweed Stein changed herself into :D) unless they come from mutation like the original ones (the process of female's succubization being an example). There's also a soldier in MGQP's demo talking about dark energy seeping from MGs and affecting human males (just like in Kenko's MGE), so if there is something connecting monster races it's only that "thing" and they can't be relatives in a way of sharing the same ancestor.