Alien Types

Its obvious that no one can be a Queen, that would be so unfair. But what about other types like Ravangers, or Carriers.

"Members are only permitted to play as an alien, predator, or marine (as well as synthetics), this includes several alien variations, such as facehuggers, chestbursters, predaliens, drones & runners"

Where did I find this? The rules, but it is a good question, I know in the games there are many different types of aliens, but here we try to stick with what the movies show.

Okay, thanks for the help.