Horus Devoures is Bon Appetit's ancestor from hundreds of years ago, when the world was more wild, and dragons roamed more plentiful. On his travels to "slay" the dragons, Horus wears this armor, enchanted by his father, to resist dragon's fire and other such dangers. It can also adapt to any growth Horus might undergo while on his quest, perfect for large meals~

A more standard ref and colors for Horus, done by https://theselfsufficientcrescent.tumblr.com/