A full Asha'man. He calls himself Tsorovan'm'hael or "Storm Leader" in the Old Tongue.
Physical Description
He is a hard-faced young man. (LoC,Ch55) He is arrogant and cocky. (ACoS,Ch2) He is a few years older than Rand and of middling height. (TPoD,Ch21) He wears his hair caught at the nape of the neck with a silver clip. (WH,Ch33)
Chronology
At the battle of Dumai's Wells, Gedwyn starts to attack Gawyn before Rand knocks him down. Gedwyn nearly turns on Rand before Taim arrives and takes control. (LoC,Ch55)
After the first skirmish with the Seanchan, Gedwyn and Rochaid talk quietly together. (TPoD,Ch23)
After several more battles, Rand sends Dashiva and Flinn with orders for Gedwyn to renew his attack. Gedwyn returns reporting that all the Seanchan are falling back. Gedwyn and Weiramon recommend that they push on to Ebou Dar. (TPoD,Ch23)
Gedwyn and seven other Asha'man hold gateways as Rand's army pours through, preparing for the final battle with the Seanchan. Gedwyn then accompanies Weiramon. Bertome overhears Weiramon say to Gedwyn, "I don't care who you are. I won't take more risk without a command direct from the lips of—" (TPoD,Ch24)
After the explosion, Rand spies Dashiva, Gedwyn and Rochaid together. Gedwyn says "... telling you I felt nothing. He's dead." Dashiva spots him, snarls, and throws fireballs at him. A few minutes later the three apparently leave the Sun Palace via gateway. (TPoD,Ch29)
Books 