I’m not particularly crazy about the art in this strip. I think the design for the Garg was better back in strip 000. This one just looks stiff… I’ll have to work on his design in future comics.
As far as the Garg’s “acidic saliva”, I just figured that since it doesn’t have much in the way of a stomach (or any body at all), it would need some other way to digest food.
I’m not sure if there is such a thing as “acid retardant child clothing” but it’s the only thing I could think of to explain how CK survives. He’s wearing short sleeves, but maybe he tucks his arms in or something. I don’t know… What do you want from me? Logic?