Stage 1 of 3
The godparent has turned into a scary fairy, they will develop razor-sharp teeth and pointed ears. They just want to cook their godchild. Their insanity just goes into lying to their godchild and telling him or her they are healed.
Stage 2 of 3The godparent is more grotesquely transformed now, developing pimples and elongated eyes, their ears are more pointed than the first stage. They develop a greater will to kill their godchild such as colliding with him or her with numerous vehicles.
Stage 3 of 3
The godparent is fully transformed and now looks like a giant bug. It just wants to grab his or her godchild and eat it raw.