Miri Sugo

Longsword Hybrid (real name unknown) is a human-devil hybrid that merged with the Longsword Devil and serves as a minor antagonist in the Control Devil arc, where he faces the Chainsaw Devil.

Human Form
In his human form, the Longsword Hybrid is a young man of average height with unkempt black hair and visible dark circles under his eyes. He wears a sweatshirt underneath his Devil Hunter suit.

Hybrid Form
When transformed, the Longsword Hybrid gains a head similar to that of Katana Man, except that it has a pointed face from which two longswords protrude backwards, resembling horns. The Longsword Hybrid's arms have blades protruding from them.

Personality
Longsword Hybrid's real personality is unknown as he was being controlled by Makima during all of his appearances. In his only line in the manga, he makes it clear that he wants to impress Makima in the group's first operation.

Control Devil arc
After Makima commanded her agents to attack. The Spear Hybrid along with other hybrids pulled out their weapon, transforming themselves into their hybrid forms, and lunged at Denji. As each makes contact with him, they are blown back by the force of him leaping forward and soon afterwards he is cut in half next to Quanxi by a kick from Chainsaw Devil.

He reappears in the final fight and charges alongside Katana Man to attack Denji, where he quickly has his chest sliced ​​open by one of Denji's saws.

Hybrid Powers

 * Hybrid Transformation: The Longsword Hybrid can remove his right hand and reveal a blade on the inside of his arm to transform into its hybrid form.
 * Augmented Body: Longsword Hybrid has strength, defense and speed well above average for being a hybrid, being able to match beings like Katana Man and Chainsaw Man.
 * Blades: Like Katana Man, the Longsword Hybrid has sharp blades on his arms that he uses to slash his opponents in combat.
 * Blood Consumption: As a hybrid, Longsword Hybrid is able to heal wounds by consuming blood, regenerating his entire body.
 * Nigh-Immortality: Due to being a hybrid, Longsword Hybrid is immortal and nearly unkillable.

Skillset

 * Swordsmanship: The Longsword Hybrid is a skilled fighter with blades on his arms.

Trivia

 * The exact type of sword this hybrid is supposed to be is currently unknown. It has been both inconsistently referred to as “Longsword” and “Broadsword” by fans but both are purely conjectural names.