"Xiao You is one of the main characters in the Japanese manga series ""I Am The Immortal."" Xiao You is a mysterious and enigmatic character who's shrouded in secrets and has a dark past. The character was first introduced in chapter two of the manga, where he saves the protagonist, Wang Xuan from an attack by a group of bandits.

Xiao You has a slender physique and is always seen with his hair tied back in a loose ponytail. He has sharp, piercing eyes that seem to look right through people. Despite his youthful appearance, Xiao You is actually much older than he looks and has lived for centuries thanks to his immortal powers.

Xiao You is a skilled fighter, proficient in a variety of martial arts styles. He's known for his lightning-fast reflexes, agility, and his ability to use weapons to deadly effect. He also possesses other supernatural abilities such as the power to control shadows and teleportation.

One of the most intriguing aspects of Xiao You's character is his aloof and detached manner. He rarely speaks and seems to prefer to observe things from a distance. However, he has a strong sense of justice and will not hesitate to step in and fight for what he believes is right.

Xiao You is also very intelligent and has a great deal of knowledge about ancient cultures and languages. He's often seen reading ancient texts and studying artifacts to uncover their secrets. His intellect and curiosity have made him a valuable ally to the other characters in the series.

Despite his many strengths, Xiao You is not invincible. He has a tragic past that haunts him and has left him emotionally scarred. He's also vulnerable to attacks from other powerful immortals who seek to challenge him for dominance.

Overall, Xiao You is a complex and multifaceted character who's essential to the plot and storyline of ""I Am The Immortal."" His mysterious nature and incredible powers make him a captivating and intriguing character that readers will love to follow."