The time has come, for you to fight the Wither, a fierce three headed demon that wreaks havoc wherever it goes. You place the final skull on the statue and wait for the wither to come to life and face you. After a long battle, the wither speaks to you in a feminine voice

"You've got quite some skill human, I like that. Let's call a truce, you are not my enemy"

You consider the offer for a truce, you accept it, the wither tells you that it's name is Welma, maybe Welma isn't evil afterall