THIS IS A MAJOR ROLE

First Sergeant Marcus “Mark” Adler is a seasoned ODST and a key member of Legacy-One, led by Spartan-II Claire S-135. A veteran of countless high-risk operations, Adler remains level-headed even in missions with staggering casualty projections. His undying loyalty and respect for his colleagues—forged through decades of combat—are absolute, only shattered by betrayal. Adler’s calm professionalism and combat prowess make him a vital asset, complementing Claire’s stoic leadership with grounded reliability. His nickname “Mark,” a play on his name, stems from his devastating efficiency against Covenant forces, leaving a trail of enemy losses dwarfing human casualties.

Adler knew his calling early in life. In 2523, at the age of 16, he rejected formal schooling or civilian jobs, enlisting as an ODST to serve on one of the first Paris-class heavy frigates. Deployed to quell the Andesian insurrectionist uprising, his early missions felt like glorified policing—disarming farmers with pitchforks and factory workers with sharp tongues. But the conflict escalated when those farmers donned explosives and workers wielded stolen weapons, plunging Adler into the brutal reality of war. By 2530, he was the epitome of a soldier: unquestioning, mission-focused, and ruthlessly effective. Facing the Covenant, a non-human enemy, simplified his moral landscape. Now, in 2551, Adler’s experience anchors Legacy-One, his steady voice guiding Marines through chaos.

Adler can be described as Focused, Experienced, Calm, Professional

This character requires the actor to emote consistently. As a Marine, yelling is part of the job