Senor Bitey

Senor Bitey was a rattlesnake which was near-drowned in Mezcal liquor, who, upon being found by Adric Dondarrion, was released as Adric's animal companion for a short while. Due to Senor Bitey's proximity to the Seven Champions, and extreme exposure to many forms of exotic magic, Senor Bitey accidentally manifested Free Will, and has shown up in several iterations of the loop in many different forms.

To date, he has been seen as: Senor Bitey has also featured in a number of prophetic visions, though the sincerity of these can be questioned. His importance to the overall destiny of the seven is currently unmeasured, and many cannot tell whether he is a significant feature of history, or a rather comical accident.
 * A large undead snake
 * A serpentine skeleton
 * A ferali
 * A voidworm

Only time will tell.