LeBoeuf is an expierienced Texas Ranger who is also on the trail of Tom Chaney during the events of True Grit.
LeBoeuf is in either his late twenties or early thirties, he has auburn hair and a somewhat persistant cowlick. He fought for the Confederacy in the Civil War, serving with General Kirby Smith in Shreveport, 1863, and later with the Army of Northern Virginia. A proud Texan and Ranger, he is known to wield a Sharps Carbine Rifle of which he is very proud of, claiming that it is a precision machine in his hands.
During the events of True Grit, LeBoeuf he is introduced to Mattie Ross before she sets out to find Chaney, initially they butt heads, with Mattie insulting his serveral times. It is revealed that he has been tracking Chaney for some time, after Chaney killed a senator in Texas. He is denied the partnership but he soon comes to an agreement with Reuben Cogburn, the agreement is broken when the two have a small arguement due to LeBoeuf's criticism of Rooster's War record.
He continues to pursue Chaney alone and runs into the Ned Pepper gang. The gang seizes him and drags him along behind a galloping horse. Rooster saves him, but accidetally shot his shoulder. LaBoeuf nearly severs his tongue in the process.
They meet once again the next day, the Ranger saves both Mattie and Cogburn, he kills Lucky Ned in the process. He is last seen on a high ledge from which he had killed Lucky Ned, he is not heard from again.
In the original, LeBoeuf is killed.