Attack Titan (5e Creature)
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Gargantuan aberration, chaotic evil
Transformation. A Titan shifter can transform into a Titan, in this case, the Attack Titan. When the Titan shifter in human (or humanoid) form has a purpose in their heart and damages themselves, he or she shifts into a Titan. The Titan forms out of air and manifests in seconds. The shifters Intelligence, Wisdom, and Charisma scores stay the same (the ones in the stat block are from the Eren, the shifter from Attack on Titan). Once the Titan shifter wants to revert back to humanoid form, he or she will pop out of the Titan's nape, and the body will slowly melt into steam.
Curse of Ymir. 13 years after its first transformation, the Titan shifter will die. Only a wish spell can prevent this from happening.
Siege Monster. The Attack titan deals double damage to objects and structures.
Regeneration. The Attack Titan recovers 20 hit points at the start of each of its turns. The humanoid inside it also regenerates half of these hit points. If the Attack Titan takes any form of damage to the nape of its neck, this trait doesn't function at the end the Attack Titan's next turn. The Attack Titan only dies if the humanoid inside it dies.
Weak Point. The nape of the Attack Titan's neck is a weak point. An attack which specifically targets the Attack Titan's nape deals damage to the person inside (usually a commoner unless otherwise specified by the DM). If the person inside dies, the Titan dies instantly. You must climb up the Attack Titan to the nape with a Melee attack, or you can try to shoot it with a ranged weapon at disadvantage.
Punch. Melee Weapon Attack: +14 to hit, reach 20 ft., one target. Hit: 63 (8d12 + 9) Bludgeoning damage and if the target is Huge or smaller, they must make a DC 22 strength save or be knocked prone.
Kick. Melee Weapon Attack: +14 to hit, reach 25 ft., one target. Hit: 75 (12d10 + 9) Bludgeoning damage, and if the target is large or smaller they must make a DC 22 strength save or be launched 20 ft.
Bite Melee Weapon Attack +14 to hit, reach 10ft., one target. Hit 63 (8d12 + 9) Piercing damage, and If the target is large or smaller it is restrained.
Focused Regeneration (Recharge 5-6). The Attack Titan needs to be ready to battle at any time, and because of this, has an increased healing factor. As an action, the Attack Titan can regenerate twice the amount of hit points it normally would have been able to that turn.
Roar (recharge 6). The Attack Titan screams very loudly, making all targets within a 60 ft. cone from the Attack Titan's mouth make a DC 22 Constitution saving throw. On a success, they are frightened for for 1d2 hours.
The Attack Titan resembles a muscular adult human male at a gargantuan size. It has black messy hair, and an unusually long tongue. It's ears are reminiscent of an elves, and The Attack Titan's jaws are in two layers. The first is in the front of his mouth while the other, slightly higher set is on the side of its mouth. When it gets enraged, the Titan's eyes turn bright green and emit a slight glow. The Attack Titan's entire body is unnaturally ripped, and it can roar louder than you can ever believe.
100 years after the Marley took over Eldia, Eren Jeager watched as the Colossal Titan kicked down the wall that protected his city from the Titans. He barely escaped with his life as he saw his mother get eaten by a Titan. Wanting to get revenge, Eren joined the Cadet Corps to learn how to fight Titans. After his training was over, The Colossal Titan launched an attack on the city of Trost. During the battle to evacuate Trost, Eren's leg was bitten off by a Titan. Wanting to make his life meaningful, he sacrificed himself for his friend Armin and got his arm bitten off as he went down the Titan's gullet.
An hour later, Cadets still in the city saw the strangest thing: a Titan using complex martial combat against other Titans. Armin used the Abnormal Titan to help fight there way to the armory in Trost, where they could escape. But after fighting for a while, the new Titan collapsed and none other than Eren emerged from the back of the Titan's neck, with all of his arms and legs.
Variant Trait: Skin Hardening
This is a trait that all titanshifters can learn through practice. What it does is essentially harden the skin so that only adamantine and heavy-impact weapons could break through it. As an action or reaction, the Attack Titan can turn a portion of their skin into hardened Titan skin, an almost indestructible material that weighs next to nothing more. When used, it remains for one minute before dissipating. This feature can only be used once per titan shift. If a hand or foot is hardened, the attack coordinating to that limb deals double damage. Increase the Attack Titan's Challenge rating by one if this feature is used.
Alternatively, if the Attack Titan shifter has ingested the armor serum, this ability can be used to create hardened tendrils from the body of the titan in order to create near-indestructable structures. As an action, the Attack Titan can make it's entire body become frozen in the hardened skin and cannot move (except for the nape). For every round following this one, the Attack Titan can create up to 50 cubic feet of hardened Titan skin structures, so long as it all connects and can support itself. This can be done for the next minute, and remains even if the Titanshifter leaves the nape of the titan. If this feature is used, increase the challenge rating of the Attack Titan by another 1.