Harry Flynn is a longtime business associate of Drake's and one of the secondary antagonist in Uncharted 2: Among Thieves. He is voiced by Steve Valentine. In the second game, he approaches Drake, convincing him to help steal an oil lamp from a Turkish museum for a wealthy client. The two, along with Frazer, plan to keep the lamp for themselves, believing it will lead to the location of Marco Polo's lost fleet and the treasures it holds. In reality, Flynn is working for Lazarevic, and betrays Drake, taking the location coordinates and landing Drake in prison. He then works with Lazarevic in searching for the Cintamani Stone. When Lazarevic apprehends Drake, he has Flynn force him to find the location of the entrance to Shambhala. There, Lazarevic and his men, Flynn, Drake and company are attacked by the Guardians, where Flynn is gravely wounded due to a gunshot wound. Flynn ultimately commits suicide while attempting to blow up Drake but severely wounds Fisher with a grenade.
Source: Wikipedia, "List of Uncharted characters", available under the CC-BY-SA License.