Name: Artemis Linkovacght
Race: Human
Personality: Very very serious in combat, but in a normal conversation he will place a joke here and there. Not only this, but he is a very proud, and honorable person whom will keep his word even if it leads him to death. This pride, of course, is also his greatest weakness, and will not stand for a challenge that he believes either insults his integrity, intelligence, etc., or a combination of those. You get the basic idea.
Appearance: Looks like the basic White Templar at first glance, but wears a pitch black robe, and on both his knees he has the roman numeral III. Also on the middle of his robe he has a custom design, of a strange symbol with only meaning to him. Also his shoulder armor (or whatever it's called) are white, while his arms are black. Everything else is pretty much the same. The Imperial Eagle on his breastplate signifying that he is a traitor to the Imperium. On another note, the symbol of the Tau is painted on the front of his robe.
Personal History: Was born on Krieg after the planet finally returned to Imperial Rule, and because he felt it was his duty, he joined the Death Korps of Krieg. He fought in the Third Armageddon war with the Orks. He was greatly outnumbered by Ork elites, but through sheer luck and willpower he managed to rise to the top. Afterwords the White Templars decided to go over his service record, and eventually decide to take him in as one of them. After rigorous tests of fighting off impossible odds, he passes, and gets the gene-seed implanted within him, and he begins his space marine hood as a scout marine. After a rather uneventful scouting hood he retrieved his power armor becoming a true marine. Later on he was ordered to slaughter many innocent civilians on some back water planet, and he refused. His master then took his gun, and shot them down. Artemis then lashed out, stabbing him with his sword. Within less than a day he was branded traitor, and turned to the only people that could take him in, the Tau. With the Tau he acts as a mercenary being at the forefront of melee combat engagements.
Equipment: The usual beginning assault marine equipment. A chain sword, pistol, pack, etc.
Rank: Assault Marine Sgt.
Affiliation: Tau Empire
(beware i don't know much about 40k)