Graham Aker

Nationality: Union (American)
Unit: YMS-01A Union Flag

The ace pilot of the Union. Originally on the MSWΛD (Mobile Suit Warehouse and Development) mobile suit team with the rank of First Lieutenant recently promoted to Captain, he was later transferred to the Anti-Gundam Investigative Squad. Possessing uncanny instincts, he pilots a black custom Union Flag. His signature move is to transform his Flag in mid- flight. When fighting the Gundams he exhibits tenacity and skill which makes him a formidable opponent for the Gundams.

(Source: Gundam Wikia)