I see four; two 5*'s, a 3*, and a 1*. My guess is that these are merely behind-the-scenes things being used to tinker with the vault in some way we weren't necessarily meant to see. It's interesting they don't all have the standard generic silhouette. Two of them use the Orion Slaver's silhouette and the other two use Security Chief Worf's. Stranger still is that if you click on the two using the Slaver's, the pop-up shows Worf's anyway.
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Of course, the tests should not be writing to the production database, and they're not even properly covering all 1-5* crew options.
So glad to see DB finally doing some proper automated testing. But it looks like they're screwing up that testing too.