Adam

From Guild Wars Wiki

Adam is what Eve calls her skull, which she insists can talk to her. However, he is only mentioned and not seen in-game.

“

Eve's one constant companion is a human skull she found in the hidden library. She insists that the skull - which she calls "Adam" - speaks to her and dispenses wise advice at critical junctures. No one else has ever heard the skull say a word.

— The Guild Wars Factions Manuscripts

[edit] Trivia

• The combination of Eve and her skull, Adam, is a reference to Adam and Eve.