Cheronian

The Cheronians were a race of long-lived humanoids were native to a planet called Cheron located in the Beta Quadrant, until they settled to a new planet called New Cheron, became their new home.

They possessed extremely fast space ships with an advanced cloaking technology, and also possessed advanced protective shielding systems on their persons, which could also be utilized to disrupt sensitive computer systems and as weapons against others. Some members of the species could also command advanced technological systems by sheer willpower alone, bringing vessels as large as a starship entirely under their control to send where they pleased.Inhabitants of this planet bore a peculiar physical appearance: their skin was exactly half-black and half-white, with some white on the right side and black on the left, and others the opposite. Those who were "black on the right side" considered those "white on the right side" to be inferior. They subjugated their brethren in what they thought was a gesture of mercy and compassion, but the "whites on the right side" considered it nothing but slavery and oppression. By 2268, civil war had completely destroyed their civilization, leaving only two known survivors, Bele and Lokai.

Bele referred to Lokai as "half-white" in a tone clearly meant to disparage; Lokai referred to Bele as "half-black" in a similar fashion. From Bele's reaction to Kirk's suggestion that his people were once of one color, and both aliens' use of phrases such as "monocolored trash" it may be assumed they regarded their own dual colored lifeforms as superior to singly colored lifeforms.

In the 2270s, Bele and Lokai were unaware that some of their people had left Cheron and settle a new colony where both races can get along with each other in hope to save their species from extinction. In the mid 2290s, one of the Cheronians arrived to Earth, and allow their people to become part of the Federation.