Attack on Titan 2 - Gameplay Walkthrough Part 1: A New Recruit
"You can stop worrying about grenades now," Jäger radioed, a slight smirk playing on his lips as he gripped his 416-C carbine.
If you are looking for a different "Jaeger" game, you might be referring to one of these: Pro Jager Download PC Game
Born in Düsseldorf, Germany, Marius "Jäger" Streicher was raised by his uncle, a mechanic for the aviation group. Growing up around engines and helicopters, Marius developed an obsession with complex machinery. He eventually joined the BPOL as a helicopter technician and later became a pilot.
"Setting the Magpie," he whispered, more to himself than his teammates. He clicked the three-legged device onto the floor. It chirped—a friendly, electronic sound that belied its lethal purpose. Attack on Titan 2 - Gameplay Walkthrough Part
His greatest contribution to the Rainbow Six team is the , nicknamed "Magpie," which can intercept and destroy incoming grenades mid-air. A Short Story: "The Magpie’s Nest"
Outside, he could hear the muffled thuds of the attackers moving. He knew the routine: first the flashbangs to blind, then the fragmentation grenades to clear the room. In his mind’s eye, he visualized the trajectory of every possible projectile. Thwip. He eventually joined the BPOL as a helicopter
If you are looking for the "story" behind this character or a narrative centered on him, here is the official background and a short fictionalized "day-in-the-life" story of the elite defender.