Reilly
From Battlestar Wiki, the free, open content Battlestar Galactica encyclopedia and episode guide
Reilly is a Viper pilot assigned to Galactica.
He is killed by Scar. His death is particularly gruesome, as Cally purportedly has to "hose out his [Reilly's] cockpit".
Reilly is said to have been a competent pilot, but easily spooked. A photo of his girlfriend (presumably dead, apparently having been taken before the war) is a recurring topic of conversation during "Scar," as no one seems to be able to remember her name (Scar).