The Character Cash Cow is the main character in the game Cash Cow. He is the one stacking the money and driving the Milk truck. He drives the truck away once your money reaches Got the Big Cash. In Cash Cow 2, there is a picture of Cash Cow on the top of the vending machine.
Cash Cow is a hard worker as shown by him doing a hard job stacking bags full of money. He can carry heavy loads and has precision accuracy as he drives away as soon as the money reaches a certain level. He does his work so well that he is featured in the corner of most vending machines. It is possible that the cow is Mr. Moo or related due to looking simliar.