Midas always acts friendly when interacting with the Lamb, although this kindness is clearly not genuine seeing ashow during their first meeting he takes some undue jabs at the Lamb for looking like a prole, making Midas similar to a businessman trying to make business even if he has no respect for his client. This is especially obvious in the "Relics of the Old Faith" update, where (if met in dungeons) he'll make fun of the Lamb before stealing their money. It's very obvious that Midas=Greedy