The pilot of the gun-toting Gundam Heavyarms, the boy who calls himself Trowa is the most mysterious of the Gundam pilots. Calm, cool, and detached, he seldom speaks and never smiles. Trowa falls in with a travelling circus troupe as cover for his terrorist mission, finding employment as the world's most dispassionate clown. Trowa is a gifted and fearless acrobat, and these abilities also prove useful in his alternate occupation as a Gundam pilot.

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.

By revealing almost nothing about his past, the tight-lipped Trowa has earned his reputation as a man of mystery. Hailing from the L3 colony, he masterfully brought his Gundam Heavyarms to Earth without detection by disguising himself as a clown.

Although the strong, silent type, he is a warrior only by necessity and fights only when needed. Along with his acrobatic skills, Trowa is a skilled flutist.

Trowa's true name is Trinton Bloom.  He before was called "No Name" because he forgot his name.  Later, he recieved the name Trowa Barton.