Well im not jeroxal im his friend Kronora but i know quite a bit about TerrorTale, Maniacal is Insanity after he got out of the Satsujinki and he revived Horror and turned him into Terror, Cruor is a upgraded version of Gore as he has been given the ability to mimic other peoples powers from Maniacal and mutate is a creation made from Terror, though he couldnt fully make him, hence why his bones are completely hollow, though Terror gave mutate the ability to shapeshift