I used to be a terrible glutton when it came to food and drink (especially drink - I was alcoholic) so I’m always sensitive to descriptions of gluttons in literature. I think I’ve found the grandaddy of them all in Spenser’s Faerie Queene.
"And by his side rode loathsome Gluttony,
Deformed creature, on a filthie swyne,
His belly was vp-blowne with luxury,
And eke with fatnesse swollen were his eyne,
And like a Crane his necke was long and fyne,
With which he swallowd vp excessiue feast,
For want whereof poore people oft did pyne;
And all the way, most like a brutish beast,
He spued vp his gorge, that all did him deteast.
In greene vine leaues he was right fitly clad;
For other clothes he could not weare for heat,
And on his head an yuie girland had,
From vnder which fast trickled downe the sweat:
Still as he rode, he somewhat still did eat,
And in his hand did beare a bouzing can,
Of which he supt so oft, that on his seat
His dronken corse he scarse vpholden can,
In shape and life more like a monster, then a man.”
Giacometti on the human head.
"The first time that I saw the head I was looking at become fixed, immobilized definitively in a moment in time, I shook with terror as never before in my life and a cold sweat ran down my back. What I was looking at was an object like any other, no, different, not like any other object, but like something which was alive and dead at the same time."