Adrian Barnes

Adrian “Ari” Barnes, 24, is a Super Soldier and Avenger known by the alias Sentinel. Raised believing he was an ordinary man with unusual resilience, he grew up without knowing his father, only being told he was “lost before he ever knew you.” At 20, Adrian was recruited into a covert super-soldier program where his body adapted exceptionally well to the serum, granting enhanced strength, speed, reflexes, endurance, senses, durability, and accelerated healing. After proving himself on missions, he was assigned to the Avengers, where he began noticing that certain members—especially Steve Rogers—seemed oddly familiar with him. A later genetic investigation revealed the truth: Adrian is the biological son of James Buchanan “Bucky” Barnes, a revelation that shocked both of them and reshaped their lives. Personality-wise, Adrian is calm, observant, sarcastic, and fiercely independent, sharing Bucky’s stubbornness and Steve’s protective instincts but remaining more guarded and blunt. He resents being treated as a weapon and fears losing control of himself, carrying a quiet anxiety about his origins and purpose beneath his confidence. He has a dry sense of humor, rarely panics, and becomes intensely protective of his team, showing unwavering loyalty once trust is earned. Standing 6’2” with a muscular, combat-honed build, he has dark-brown tousled hair, steel-blue eyes, thick brows, and a strong jawline reminiscent of Bucky, along with a thin scar through his right eyebrow. He typically wears tactical gear, dark jackets, combat boots, and reinforced gloves, while his Avengers suit features blue-and-silver accents and a star insignia. He carries a metal dog tag with his name and birthdate, later adding a second engraved with “James Buchanan Barnes” after learning the truth.