Not much is known about Philip Liu before the outbreak happened. Sometime after the outbreak, he joined the Fireflies and eventually lost his dog tag or died.
A pendant worn by the members of the Fireflies.
Philip Liu's Firefly Pendant can be found in the chapter "The Quarantine Zone" during the section "The Cargo". The pendant can be found right after meeting Ellie for the first time, next to a dead Firefly on the ground.
- Philip Liu is the name of a real-life person who was one of the winners of the The Last of Us Firefly Pendant Contests, where he got his name on a pendant in the game.
- Monacelli, Eric (May 3, 2013). "The Last of Us Firefly Pendant Winners and Limited Edition Strategy Guide". Naughty Dog. Retrieved March 24, 2020.