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Hyper-Density Seals

Item

Sir Nighteye carried no offensive Quirk, so he carried these instead: little stamp-shaped slugs weighing five kilograms apiece. Thrown fast enough, one of them hits like artillery and gives him a reach his own body never provided.

Type: Weapon
Effects: Compact projectile
Japanese: 超質量印
Anime Debut: Episode 73
Manga Debut: Chapter 148
Weight Each: Five kilograms
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Overview

Sir Nighteye kept a supply of these weapons on hand. Each one is small and shaped like a stamp, and each carries five kilograms of mass packed into that frame.

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Function

The seals become dangerous through sheer velocity. Hurled at extreme speed, they let their user open fire from a distance, which covers the gap left by a Quirk that offers nothing in a fight.

The force behind one is not modest. A single throw from Sir Nighteye wiped out one of Twice's Doubles outright.

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Notable Users

Sir Nighteye is the only wielder shown. Their supplier is an unidentified support company.

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Frequently Asked Questions

Who is the seal guy in MHA?

Sir Nighteye is the Pro Hero who carries the Hyper-Density Seals, small stamp-shaped weapons he throws at high velocity to compensate for a Quirk that offers nothing in a fight.

How heavy are Nighteye's stamps?

Each Hyper-Density Seal that Sir Nighteye carries weighs five kilograms, packed into a frame small enough to be shaped like a stamp.

What are the Hyper-Density Seals in My Hero Academia?

The Hyper-Density Seals are small, stamp-shaped weapons carried by Sir Nighteye, each packing five kilograms of mass despite their compact size.

What has Sir Nighteye done with the Hyper-Density Seals in battle?

A single throw of a Hyper-Density Seal from Sir Nighteye was enough to wipe out one of Twice's Doubles outright, showing the force behind them at extreme velocity.

Who supplies Sir Nighteye's Hyper-Density Seals?

The Hyper-Density Seals come from an unidentified support company; My Hero Academia does not name their maker.

Sources & Information

Looking for more on Hyper-Density Seals? The Dragon Ball Wiki on Fandom has a dedicated page with community notes.

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This content is original writing by Daddy Jim Headquarters based on the Dragon Ball anime series, manga, and official materials. Episode and chapter references are cited where applicable.

Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:

  • Movie pages: theatrical posters and key visuals, credited to Toei Animation and Shueisha.
  • Game pages: official box art, credited to Bandai Namco, Atari, and other publishers.
  • Manga chapter pages: Jump Comics volume covers, credited to Shueisha and Akira Toriyama.

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