Lost M&M's Tribe

During the 2012 Lost Tribe promotion, Yellow and his fellow M&M's set a course by his ancestor's directions to find a lost tribe of their kind. On an island, they discover the Lost M&M's Tribe who then proceed to attempt devouring them.

Characteristics
As seen, the Lost M&M's Tribe consists of more primal versions of the five main M&M's and even match them somewhat in terms of personality. A good example of this is seen in the commercial "DNA Test" where a Yellow-resembling tribesman (possibly the leader) begins communicating in his language before unintentionally embedding a spear into his foot. This act is deemed as proof that he and Yellow are related somehow. This also extends to other M&M's such as the Orange parallel demonstrating paranoia and fear.

They also demonstrate many attributes of the stereotypical cannibal tribe. They have sharpened teeth and facial markings. They have a cauldron set up to prepare their intended victims. They also show a relentlessness in hunting down their intended prey as they are guided by their seeming hunger.

Series
In the first advertisement of the series, Yellow and his associates go through a jungle and come across the settlement of the Lost Tribe. Immediately, the Lost M&M's Tribesfolk tie the M&M's to poles and ready a cauldron to prepare them for supper. Yellow protests that he was not meant to be eaten while Blue and Red insist that he is as an attempt to save themselves. In another advert however, the M&M's mistake the bubbling cauldron for a jacuzzi and do not seem to notice the Red analogue cutting up carrot slices into the water.

At some point, the M&M's escape and flee for their lives with the Lost Tribesfolk in hot pursuit. One advert shows Red and Yellow hiding out in a dark cave, only be to caught and licked by the Red analogue. Orange attempts to flee his counterpart that seasons his head and later tries to entrap Orange in a cave. For the most part, the latest adverts in the series have consisted of the cannibalistic M&M's trying to hunt down and kill their known counterparts.

It is implied that they may have killed and eaten Yellow's ancestor that discovered their location. However, given the alleged evidence that at least Yellow is biologically related to the tribe, it is also possible that Yellow's ancestor went native.