|You're fricking kidding me. Gotta be fricking kidding me. I'd be drinking right now if it wasn't for you! This is all your fault!|
|— Gelgar at the Titans in Utgard Castle|
Gelgar was a young man who had brown hair that he styled in a pompadour. He had a prominent nose, and wore the traditional Scout Regiment uniform with a gray button down shirt underneath.
Gelgar is one of several soldiers including Henning, Tomas, Lynne, and Nanaba, that are brought by Miche to oversee a group of potentially untrustworthy Scout Regiment recruits. The group is assembled close outside of Wall Sina, and disarmed of their weapons due to the suspicions that one of their numbers might be an accomplice to Annie Leonhart.
Before an investigation can begin, Titans appear within Wall Rose. Miche orders the group to split into four squads to warn the nearby villages; Gelgar is placed in charge of the South team. At the edge of the distant forest, the Scouts notice the Titans starting to run erratically towards them. Miche breaks away from the group to lure the Titans away. The other scouts worry for Miche, but Gelgar insists that his skill is second only to Captain Levi.
They eventually make their way to Ragako village, Conny Springer's hometown. After noticing the lack of blood and bodies, as well as the stable full of horses, he and Lynne try to keep Conny's hopes up about potential survivors. Later that night, 11 hours after the sighting, Gelgar's team slowly investigates Wall Rose for a breach, the tension thick in the air as the threat of Titans lurking the darkness grows with each second. Suddenly, Gelgar's team spots Nanaba's team approaching. Nanaba asks Gelgar for the location of the breach, which they could not find, but Gelgar tells them that his team found no breach either. They consider if the breach could have been missed, though Henning says that a breach large enough for Titans to enter would not be easily overlooked. The teams consider searching again, though the tiredness of the recruits and the horses leaves them in need of a night's rest. As night falls, the two groups take refuge in Utgard Castle.
Two hours earlier, Nanaba's and Gelgar's team set up camp within Utgard as the horses rest and drink. Henning observes that someone had been at the castle recently, and Lynne proposes the possibility of bandits. Gelgar joins them with a bottle of alcohol, though he cannot read the writing on the label. Gelgar tells the recruits to rest as the top soldiers keep watch, though little trouble is expected from the Titans at night.
Utgard Castle soon comes under attack from numerous Titans capable of moving during the night. Since the soldiers who had been under suspicion do not have omni-directional mobility gear, Gelgar and Nanaba take the lead in engaging the Titans. However, Gelgar quickly runs out of swords and, after sustaining a head injury, loses the strength to continue fighting.
He falls off the Wall and is thrown into one of Utgard Castle's rooms by a Titan, after Nanaba intervenes trying to save him.
Spotting on the floor the bottle of alcohol he found earlier, Gelgar is happy that he will at least have a final drink before dying; however, the bottle turns out to be empty, and Gelgar spends his final moments demanding to know who drank it. A Titan then reaches through the opening and eats him.
Gelgar's Statistics :