Technically, there are no sex organs in supermutants. They can identify as male or female but genetically they are neither and none of them are capable of producing offspring. Instead, they capture humans and expose them to the FEV to turn them into Supermutants.
There’s one or two female super mutants in New Vegas, so you might be thinking of them.
Technically, there are no sex organs in supermutants. They can identify as male or female but genetically they are neither and none of them are capable of producing offspring. Instead, they capture humans and expose them to the FEV to turn them into Supermutants.