Marty is Blue's Australian agent mentioned in on the M&M's website in Australia since 2009.
History[]
Having to break up with the other spokescandies, Blue stated to back them off saying, "I want my agent on the phone.". Blue also asked to the website viewer if he/she wants to talk to Marty on the phone, wondering where the heck he is.
Later, when all the spokescandies went naked, Blue told Marty that want some orange juice with a bagel schmear, while Crispy looks for his shell.