Rau Le Creuset appears at first glance to be a calculating strategist, capable of predicting many of his opponents' moves. He also treats the members of his team with a reasonable amount of dignity and respect and can be charismatic to persuade people for his own ends, however below this calm exterior lies the persona of a nihilistic omnicidal maniac. When confronting his enemies directly, Rau's true colors are revealed, he believes that he's the only one with the right to judge both Naturals and Coordinators and has a deep hatred for both. As a clone, he suffers from accelerated aging due to shortened telomeres, a side effect of the cloning process, and he has to take regular medication.

Rau is a skilled pilot, capable of piloting a number of suits with ease. Like Mu La Flaga, he has high spatial awareness and thus capable of controlling multiple remote guided weaponry, as shown when he used the Providence's DRAGOON System to dominate Kira Yamato's Freedom Gundam for most of the fight. He is also skilled with firearms and tactics, capable of seeing through feints and decoys to determine the enemy's true plan.