Fleshlight Freaks come from probably the most well-known company on this list, seeing as Fleshlight is to masturbation toys what Oreos are to sandwich cookies. Their horror-inspired freak toys started life as a one-off Halloween campaign a few years ago, but stuck around and became immensely popular, because of course they did. Based on popular movie monsters, they offer a chance to fuck the Bride of Frankenstein, a vampire (complete with bat-winged labia, naturally), a space robot thing, and a zombie.
Note that at least two of those things are technically corpses.
The newest addition to the line is the alien, a blue, triangular thing apparently based on the ThunderCat Smurfs from Avatar, despite the fact that in the movie their chosen method of fucking is ponytail rape.
Oh, and if for some reason you're not into stickin' it to latex reimaginations of murderous carcasses: the company offers female and male versions of each monster genitalia. You know, just in case you feel like owning a graphically decomposing zombie dick.