|Gun (Leon shapeshifting)|
|Type||Short and Long-Range|
|Manga Debut||Chapter 1|
|Anime Debut||Episode 1|
Leon can transform into a gun that Reborn uses as his primary weapon. Reborn usually uses the weapon to shoot enemies or obstacles. The gun can shoot various type of bullets, including the Dying Will Bullets or the Rebuke Bullet. The gun can also transform into a sniper that can shoot a great distance, as demonstrated when Reborn uses it to influence events at Namimori Middle without actually being close by. The gun can cause widespread damage, but Reborn seems to be able to control its power in addition to being skilled at aiming all forms.
- Chaos Shot: Reborn uses the gun to shoot his Sun Flames, which in turn split into many arrows that can home in on a target with amazing speed, also being useful for attacking multiple targets at once.