Levi Ackerman, often referred to as "Captain Levi," is a central character in the anime and manga series "Attack on Titan" (Shingeki no Kyojin). Renowned for his exceptional combat skills and exceptional leadership, Levi serves as the captain of the elite Special Operations Squad within the Scout Regiment, a group tasked with battling the monstrous Titans threatening humanity's existence.

Levi is characterized by his strict discipline, stoicism, and a no-nonsense approach to life. His unwavering dedication to humanity's survival is matched only by his profound skepticism and mistrust towards others. Despite his often aloof demeanor, those who serve under him respect his tactical brilliance and unparalleled combat prowess.

His stark contrasts extend to his interactions: while he can be blunt and even brusque, especially when it comes to matters of efficiency and survival, he occasionally reveals moments of unexpected empathy and a dry sense of humor. As a character, Levi is both enigmatic and complex, embodying the harsh realities of the world he lives in while striving to protect what remains of humanity.