Trowa Barton
Despite his youth, Trowa is an experienced professional soldier. His preferred combat tactic is to stand his ground and spray the battlefield with an endless hail of bullets, though every now and then he’ll dispatch an enemy with his acrobatic trademark move - a mid-air triple spin, ending in a deadly knife slash.
Catherine Bloom
His real name, according to the Gundam Wing prequel Manga: Episode Zero, is Triton Bloom, Catherine Bloom’s long lost Brother.
In MC0021, alongside Instructor W, Trowa (under the alias “Dokter T”) develops 4 new mobile suits for unknown purposes. When asked by his young look-alike Trowa Phobos what the T in his name stands for, he first answers ‘Trowa’, but later concedes that it stands for ‘Triton’, confirming other series materials which indicate that Trowa is Catherine Bloom’s long-lost brother.