Lee Shin is a supporting character in the anime Bloodivores, introduced as a professional assassin and a vampire, or Bloodivore. He is physically distinctive, with long maroon hair, pink eyes, and often wears a collar and choker, which are typical restraints for Bloodivores in the story. He is highly skilled in combat, particularly with bladed weapons, and is noted for his proficiency in wielding two swords simultaneously. His abilities make him effective at dispatching the monstrous creatures that appear in the series.

In terms of role within the narrative, Lee Shin functions as a capable and reliable ally to the main protagonist, Mi Liu. He frequently assists in holding back enemies and helps the group progress through dangerous situations, often emerging unscathed from encounters. His background as a professional killer suggests a calm and pragmatic demeanor in battle, though deeper personality traits and personal motivations are not extensively explored in the available information. His key relationships include Mi Liu and the other prisoners, with whom he cooperates to survive.

Lee Shin does not undergo significant visible character development in the anime; he remains a steady and competent fighter throughout. His notable abilities revolve around his assassin training: exceptional swordsmanship, agility, and the combat experience to handle multiple foes. As a Bloodivore, he also likely possesses the enhanced physical traits common to his kind, such as increased strength and reflexes, though the specifics of his vampiric powers are not detailed in the source material. Overall, Lee Shin is a cool-headed and dangerous warrior who serves as a supporting pillar in the group's struggle for survival.