[Sorry this reply came so late! I was packing etc] Hallow likes most things, but he's an especially big fan of seafood (Shellfish are a huge fave) and anything sweet, pastries, candy, flowers. He doesn't strictly need to eat, none of the God-Sphinxes do, but most of them do enjoy it and Hallow ESPECIALLY enjoys it, he's a pretty huge fan of food in general and he'll try basically anything you offer him at least once!