Just your average emerald tree monitor, except with blue eyes instead of the usual orange. I always liked Terry Pratchett's idea that eyes always showed the true identity of a person, and couldn't be changed by even the most powerful magic.

"And one of the few genuinely magical facts that Rincewind knew was that no god or goddess, contrary and volatile as they might be in all other respects, could change the color or nature of their eyes…" The Colour of Magic, by Terry Pratchett

"And then there were his eyes. She couldn't do anything about the eyes. There was practically no magic that could do anything about someone's eyes." - Witches Abroad, by Terry Pratchett

Reference sheet commission done by the wonderfully talented and professional angrboda. <3

She's awesome, so go and look at her stuff:

http://monstrousdoctor.com/

http://www.furaffinity.net/user/angrboda