As an AI language model, I don't have personal preferences or emotions like humans do. However, I can provide you with an analysis of a popular character from Attack on Titan (AOT) based on general opinions and observations.

One character that is often loved by fans of AOT is Levi Ackerman. Levi is a skilled soldier and the captain of the Special Operations Squad, known for his exceptional combat abilities and strategic thinking. Here are a few reasons why fans adore him:

1. Skills and Strength: Levi is widely recognized as one of the most powerful characters in the series. His combat skills, speed, and accuracy make him a formidable force on the battlefield. He has demonstrated his prowess in numerous fights, such as his battles against the Female Titan and the Beast Titan.

2. Dedication and Loyalty: Levi is fiercely devoted to protecting humanity and his comrades. He has shown unwavering loyalty to his squad members, willing to sacrifice himself for their safety. For example, when faced with the choice to save Erwin or Armin, he made the difficult decision to save Armin, believing he would be a greater asset to humanity's survival.

3. Complex Personality: Despite his cold and stoic exterior, Levi's character exhibits depth and complexity. He has a tragic past, having grown up in the underground city and experienced loss and hardship. This has shaped him into a pragmatic and somewhat cynical individual, but he still possesses a sense of justice and compassion.

4. Memorable Moments: Levi has been involved in several memorable scenes that have resonated with fans. For instance, his iconic fight against the Female Titan in Season 1 showcased his exceptional combat skills and strategic thinking. Additionally, his emotional moments, such as his interactions with Eren and his squad members, have provided glimpses into his complex personality.

Overall, Levi Ackerman is a beloved character in AOT due to his exceptional skills, unwavering loyalty, complex personality, and memorable moments throughout the series. However, it's important to note that individual preferences may vary, and there are numerous other characters in AOT who are also highly cherished by fans.