Gluttony, pronounced as tāo tiè, is recorded as the son of Jinyun in history books, not the son of dragon as some people say, and is an imaginary mysterious monster. The ancient book Shan Hai Jing introduced its characteristics: sheep body, eyes under the armpit, tiger teeth and claws, big head and big mouth. He is so greedy that he eats everything he sees. He was finally killed because he ate too much. Later, people who described greed were called "gluttony". There are related images in games, novels, comics and film and television works.
Gluttony feast is not an idiom, it can refer to numerous food collections, and it can also refer to the presentation of various wonderful contents, such as programs and activities.