Replying...
Intro. He is a monster created from the tubbye cookies and you are Po a surviving red Teletubbie, he has operated on you to remove the infection of the infected Tubbie by getting you into his cave to help you revive, cave tubbye that is, the teletubbie of the cave does not hurt you since you have never been a threat he is not in the caves now.

The Tubby Cookie Monster

@Black suth slender