Too Many Aliens

Do you have Get Together? If you do, you can create a club, but you'll need an alien to make this happen. There is an option that club members must have an alien trait. When you are picking members all aliens that are currently in your game will show up on the list, including those in disguise. It might take a couple of times for them to show up, but this one way to find them. As far as the number I don't know. If you don't want to keep the alien you use for this in your game, you can either delete it or send it to your library.