Miri Sugo

"Gotta impress Ms. Makima a little on our first operation."

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
At an unknown point of time, the Longsword Hybrid was brainwashed by Makima to serve her needs. He is summoned as part of Makima's newly-formed Special Division 5, a team of weapon hybrids created for the sole purpose of battling the fully-powered Chainsaw Devil. While under Makima's control, the Longsword Hybrid tells the others that he wants to impress Makima on the group's first operation.

Once Makima commands Special Division 5 to attack, each member activates their weapon trigger, transforming into their Hybrid forms. They all leap from their respective spots to lunge straight towards Chainsaw Man. Before any of the Hybrids can land a single blow on him, they are blown back by Chainsaw Man leaping forward as he slices through Quanxi and the Longsword Hybrid with one of his chainsaw legs.

The three crash through several skyscrapers before landing in an apartment complex. As he gets up, Chainsaw Man kneels over Quanxi and the Longsword Hybrid's tattered bodies, clutching each other their severed heads before fighting the other Hybrids.

At some point in the future, Special Division 5's Hybrids are revived once more by Makima, who brings them all to a graveyard to confront Denji. Once Makima finishes monologuing her thoughts of erasing anything she dislikes to Pochita (who is disguised as Denji), the Longsword Hybrid and the other Weapon Humans transform into their Hybrid forms for the final battle. Pochita starts by slamming his fists into the ground, lifting up a huge chunk of the ground to throw straight towards Makima using his chains.

Katana Man and the Longsword Hybrid act first by leaping forward, both slicing the chunk of land and cutting it down into several dozen smaller chunks. However, the two are left vunerable as Pochita falls towards them from behind the debris. Before the two Hybrids can act any further, Pochita swiftly uses his chainsaws to cut them both, defeating them in the process.

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. However, he is named as Weapon Human (Longsword) in the second Character Popularity Poll.