A kind young man who carried himself in a dignified demeanor, Nicol was the most open-hearted and pleasant individual of all the members of the Le Creuset Team. Having a strong sense of duty towards protecting the PLANTS; Nicol felt it was his duty to fight for the safety of his homeland and for his parents' honor indicating true strength of character. While Yzak and Dearka were more forward in warfare, Nicol preferred to use a strategy more attuned to the Blitz's stealth capabilities; he fought with caution and foresight. This led Rau to state that Nicol and Athrun were rather soft. Unlike Dearka and Yzak, Nicol was more moderate in his views of Naturals and had concerns over his comrades' ruthlessness. However, this made him closer to Athrun as a result.

As a ZAFT academy graduate, Nicol possesses a wide range of militaristic skills, including hand-to-hand combat, use of hand-held weapons such as knives and guns, mobile suit piloting and OS programming, tactics and strategy, and an understanding of military protocol. In his academy classes, he typically came 3rd, with the exception of explosive handling where he was first, of the students who would become the Le Creuset Team.