Griggs

Griggs is a Resistance medic who appears in chapter two (This Vortal Coil) of Half-Life 2: Episode Two.

History
Griggs and a soldier named Sheckley were stationed at an underground Resistance base near City 17, but Antlion and zombie attacks whittled down the numbers of troops until just Griggs and Sheckley remained. Though their personalities clashed (Griggs was naive and light-spirited, but Sheckley was no-nonsense), they became an unlikely duo.

When a Vortigaunt carrying the terribly wounded Alyx Vance appeared, Griggs and Sheckley volunteered to protect them from antlions. Gordon Freeman soon showed up, and the panicky Griggs briefly mistook him for an antlion drone before being ordered by Sheckley to show Freeman their remaining supplies.

When Antlions approached in great number, Griggs grew hopeless until more Vortigaunts showed up and helped to defeat them. Griggs then stayed to help protect the Vortigaunts with Sheckley while Freeman and a Vortigaunt retrieved an essence from the Antlion hive that would heal Alyx. After Freeman returned with the essence and saved Vance, Griggs and Sheckley remained with the Vortigaunts to go hunt Advisors.

Trivia
Unlike other medics, Griggs can actually throw medkits to Freeman instead of having to be next to him to heal him.