"Levi Ackerman is a highly skilled soldier and the captain of the Survey Corps Special Operations Squad in the Japanese manga series, ""Attack on Titan"". As the series progresses, Levi becomes one of the most beloved characters and fan-favorite of the franchise.

Levi's backstory is shrouded in mystery, but it is known that he had a tough upbringing and comes from the Underground City. Despite his troubled past, Levi has shown himself to be a capable and dependable soldier with an unshakable sense of duty. He is committed to eliminating the Titans and protecting humanity from extinction.

Levi's combat skills and judgment are unmatched, making him one of the most valuable assets to the Survey Corps. He is an excellent fighter, capable of taking down multiple Titans with ease thanks to his quick reflexes and excellent use of vertical maneuvering equipment. This has earned him the nickname ""humanity's strongest soldier."" Levi's reputation for being cold and distant is primarily due to his focus on the mission and his reluctance to get too close to anyone emotionally.

Despite his tough exterior, Levi's loyalty shines through when it comes to protecting his comrades. He has a soft spot for his fellow soldiers, especially those in his Special Operations Squad. He also has a strong sense of justice and will not hesitate to stand up against wrongdoings. This was evident when he stood up to his superior officer, Erwin Smith, when he believed that they were sending their comrades to their deaths for a pointless mission.

Another notable trait of Levi is his cleanliness obsession, which stems from his past where he was forced to clean up after his abusive uncle. He has even been known to interrupt conversations to point out dirt or untidiness.

Overall, Levi Ackerman is a complex and multifaceted character, with exceptional skills, unshakeable loyalty, and an obsession with cleanliness. He is one of the most loved characters within the ""Attack on Titan"" franchise and adds depth and complexity to the narrative."