Looks like Vault Dweller is the new Pipboy.
We obviously need an epic battle to determine the true Vault Dweller. Now, you two might feel like you can peacefully coexist, but we know it's all just a hoax. Besides, it's too confusing, even with the different avatars (I wonder how many people have thought "Since when has The_Vault_Dweller changed his avatar to a lady?"). So: one must fall!
In any case, welcome Vault-Dweller, and to reiterate, the avatar's fine. No nipples in the future though, just to point out where the boundaries are.