Thomas is a peculier type of dragon known as a "Milk dragon" due to their shift to mammilian attributes. Characterised by large and subtly slender green snouts, chestnut eyes and matching thick mane running from the head down to the wing joints. Horns of ivory colouration top the skull although his look to be rounded and worn down for safety.
The dragon has the usual four legs and two wing setup and despite reports of prime physical features this one seems to be underweight and unwell based on the dull green hue of scales that beg for a better diet and the lack of smoothness to the ivory plates running along his chest, from the neck down and between his hind-legs, to the end of his tail. His hind-legs are at least thick enough looking having to deal with a dragon that often times has his forepaws too busy to walk "properly".
Such a balancing act is easy thanks to his impressive tail, just slightly shorter than his torso and looking to be quite heavy and stiff much like the tails of other large reptiles. His tri-toed paws are capped with heavy ivory claws, looking to be quite deadly were it not for him wearing them down to bluntness, for the sake of dexterity and finer manipulation that his sort couldn't hope to have.
Naturally, he keeps everything about him very clean, although his mane may sometimes be a little greasy due to the expenditure required to shampoo it, he normally pretties it up with magic instead.
He also likes to wear a navy coloured coat that is magical in nature, with a portal to the infinite-verse in the breast pocket.