Season 3, Episode 9 (Uprising Arc)
An enormous, skeletal form manifested after Eren makes contact with Ymir Fritz to begin the Rumbling. This form is several times larger than the Colossal Titan, featuring a massive ribcage and a head separated from its main body. eren titan form
When Eren witnesses Mikasa’s "death" (fake-out), his Titan emits steam so hot it melts the Female Titan’s armor. In the anime, his eyes glow yellow, and he ignites like a furnace. Season 3, Episode 9 (Uprising Arc) An enormous,
In the final arc, Eren attains the Founding Titan, resulting in a form that dwarfs the Colossal Titan. This is not a combat form in the traditional sense, but a cataclysmic event. In the anime, his eyes glow yellow, and
Eren's appearance and abilities evolve significantly as he inherits new powers and masters his transformations:
Episode 6 (Trost Arc)