The sand void, a species of tentacle monster. Non-lethal but extremely fertile. It releases a toxin from its tentacles that alters its victims perception, making them unaware of the assault on them. Some victims remain unaware for days, until the birthin
People always look at tentacle scenarios thinking at the moment, but without ever thinking about the life that characters may have had before ending up in that situation, and how they will live after escaping it.