A mystery in an enigma. His background is unknown. He seems to have arrived on Earth from nowhere. Like Heero he doesn't fear death in the least. He seems to be a very experienced fighter and once he is in his Gundam, he's like an army of one-man-armies (with backup and airstrike). He usually barrages his enemys with hails of missles and bullets. They don't call it the Heavyarms for nothing. He uses his acrobatic skills to join the circus as a clown for his cover and meets Catherine who pretty much takes the role of a big sister. Cathy and the circus manager become Trowa's family (the only one we know of). Like Quatre, Trowa is interested in music. He and Quatre even did a duet: Quatre with his violin and Trowa with one of Quatre's flutes.