what are the giants in attack on titan
Attack on Titan Over 100 years before the beginning of the story on an alternate world, giant human-shaped creatures called Titans (巨人, Kyojin) suddenly appeared and nearly wiped out humanity, devouring them without remorse or reason. What remains of humanity now resides within three enormous curtain walls: the outermost is Wall Maria (ウォール・マリア, Wōru Maria); the middle wall is Wall Rose (ウォール・ローゼ, Wōru Rōze, sometimes pronounced like rosé) and the innermost is Wall Sheena (ウォール・シーナ, Wōru Shīna, alt. "Wall Sina"). Inside these walls, humanity has lived in uneasy peace for one hundred years; many people growing up without ever having seen a Titan. This all changes when one day, a giant 60-meter (200 ft)-tall Colossus Titan mysteriously appears after a strike of lightning and breaches the outer wall of the Shiganshina district, a town at Wall Maria, allowing the smaller Titans to invade the district. An Armored Titan smashes clean through the gate in Wall Maria, forcing humankind to abandon the land between Wall Maria and Wall Rose, evacuating the remaining population into the inner districts. The sudden influx of population causes turmoil and famine.
Attack on Titan It is later revealed that the Titans were created when Ymir Fritz found the "source of all organic life" and became the Founding Titan where she had the ability to create and control the Titans. When Ymir Fritz died as a side effect of having the Titan ability for 13 years, her soul was split into the 9 Titans where their abilities can be inherited by anyone once the previous wielder is dead. These Titans consist of the Founding Titan, the Attack Titan, the Colossus Titan, the Armored Titan, the Female Titan, the Beast Titan, the Jaw Titan, the Cart Titan, and the War Hammer Titan. The 145th King that wielded the Founding Titan's power fled to the island of Paradis where he used the countless Colossus Titans to make the walls and erased the memories of the Eldians he brought with him so that they didn't know anything about the outside world.