Adam is the name of Eve's trophy skull. Note together they are Adam and Eve, named after the humans from Genesis in the Bible.
While in Nightfall Adam features in one of Eve's battle quotes.
- "Adam wants a playmate. Care to volunteer?"
- "It's not too late, Adam. Don't talk like that. Not everyone's going to die. Ssh. You wouldn't want them to. Oh, hello there. What were you saying?"