Indeed, Fizz and Stakatacool, you are getting my question...my current goal is improving my Steelix, trying to breed Onix, not any of the genderless pokemon. I have ditto, so that isn’t a problem, but the compatible egg move parents are supposed to be for Onix. I’m new at this and this is my first question or comment, and the site has been so helpful. But as far as I can tell the genderless Pokémon are not compatible parents for any other Pokémon at all. It seems only ditto could ever alter them in any way and they cannot donate to anyone else. But I am not entirely certain, so I asked. Thanks to everyone for the super fast responses! (I am using the other listed Pokémon so the page did help me).