HERO'S

HERO'S ( Hīrōzu) is a Japanese manga series by Hiro Mashima and a spin-off to the manga series Fairy Tail.

Manga
Written and illustrated by Hiro Mashima, HERO'S is a spin-off manga mini-series that began serialization on October 16, 2019. The mini-series is a crossover between three of Mashima's manga series: Rave Master, Fairy Tail, and Edens Zero.

Magic

 * Fire Dragon Slayer Magic (炎の滅竜魔法 Honō no Metsuryū Mahō): A form of Dragon Slayer Magic that allows its user, Natsu, to create and manipulate fire.
 * Fire Dragon's Roar: (火竜の咆哮 Karyū no Hōkō): Natsu expels flames from his mouth, incinerating everything in their path.

Guilds
Fairy Tail ( Fearī Teiru): A Mage guild that Natsu and his friends are members of.

Teams
Team Natsu: The strongest team in Fairy Tail, which is otherwise unnamed. It is spearheaded by Natsu.

Crew of Edens: The crew of the spaceship Edens Zero, led by Shiki in a voyage to find Mother, the Goddess of the Cosmos.

Rave Warriors: A group that accompanies the Rave Master, Haru, on his quest to find the Rave Stones and restore peace to the world.

Locations
True Island (トゥルーアイランド Turū Airando): A tropical island where the truth of the world is rumored to be found.

Others
Ether Gear (エーテルギア Ēteru Gia): A technique that allows its user to reconfigure the flow of Ether in their body like a machine, giving them superhuman abilities. It is assumed by Natsu Dragneel to be some form of Magic, though this is denied by Shiki Granbell.
 * Gravity Ether Gear (重力のエーテルギア Jūryoku no Ēteru Gia): A form of Ether Gear that allows its user, Shiki, to alter the strength and direction of gravity for themselves and others. This includes the ability to walk on upside-down surfaces, float in midair, "fall" sideways to move at great speeds, and generate orbs of gravity that increase the weight and force of the user's attacks.

B-Cube: A cubical video-recording device that Rebecca wears around her neck.

Edens Zero (エデンズ ゼロ Edenzu Zero): An interstellar warship that is used by the Crew of Edens to explore the cosmos. Its existence is kept a secret from the denizens of Earth Land, since the knowledge of space-travel would upend the planet's "primitive" culture.

Dark Bring (ダークブリング Dāku Buringu): An evil stone that gives its user special powers, but also steeps their heart in darkness, corrupting them. It is also capable of influencing people in the nearest vicinity if the user is not affected. It is Haru's duty as the Rave Master to travel the world and destroy Dark Brings wherever he can find them.
 * Oasis (オアシス Oashisu): This Dark Bring is a "fountain of dreams" that grants its holder the ability to create real people and creatures from their imagination. It is owned by the Creator, who does not show the usual signs of corruption from using the Dark Bring.

Rave: A holy stone used by the Rave Master, Haru Glory, that harbors the power to destroy Dark Brings. It is embedded in Haru's sword, the Ten Commandments.

Ten Commandments: Haru's weapon, a sword that harnesses the power of Rave to assume different forms with their own unique powers.
 * Eisenmeteor: A large, iron sword that is capable of knocking multiple enemies away. It is the default form of Haru's sword.
 * Explosion ( Ekusupurōjon): A sword that creates powerful explosions on impact.
 * Silfarion ( Shirufarion): A sword that allows Haru to move and attack enemies at superhuman speed.

Tonfa Blasters: A pair of tonfas used by Elie that fire rounds of physical ammunition.

Silver Claiming: An alchemical technique that allows its user, Musica, to change the shape of silver objects.
 * Silver Ray (シルバーレイ Shirubā Rei): Musica transforms his silver necklace into a spear, allowing him to take down multiple enemies at once.

Dragon Race Arts: A set of Dragon-like techniques used by members of the Dragon Race such as Let and Julia. They are confused by Natsu to be some form of Dragon Slayer Magic.
 * Flame Dragon Drought (炎竜旱天 Enryū Kanten): Let expels flames from his mouth, incinerating everything in their path. It is identical to Fire Dragon's Roar in all but name and origin.

Trivia

 * Hiro Mashima created the manga to celebrate the 60th anniversary of 's first publication.
 * Mashymre's name is a corruption of Hiro Mashima's family name.
 * Genesis is Mashima's fourth derivative character based on Sieg Hart from Rave Master, following Jellal Fernandes and Mystogan in Fairy Tail, and Justice in Edens Zero.