At the end of the Attack on Titan storyline, Eren successfully convinces Ymir to unleash the power of the Founding Titan for his own purposes. The result is a catastrophic event that leads to global devastation. Armed with the power of the Founding Titan, Eren activates the Rumbling, awakening countless Colossal Titans to march across the land, leaving a lasting mark on the world.
However, Eren’s Founding Titan form is notably different from other Titan forms in the series. The Final Titan Eren is distinguished by its unique appearance and immense size.
The Founding Titan is one of the Nine Titans, being the first Titan ever created. Typically, only those of royal blood, such as members of the Fritz or Reiss families, can inherit its immense power. Interestingly, the Founding Titan can also create and control other Titans.
After gaining the power of the Founding Titan, Eren utilizes its abilities to awaken people who are currently in deep sleep within three walls, commanding them to commence a military campaign against Marley, a nation that oppresses the Eldians.
Eren’s Founding Titan is significantly different from Ymir’s Founding Titan. While Ymir’s Titan form resembles most other Titans in the series, Eren’s Titan is distinctively larger and more muscular.
The Final Titan form of Eren features limbs and a skeletal structure that are less developed compared to other Titan forms, but it is still more massive than the Titans seen within the walls.
While other Titans stand around 60 meters tall and can only see over walls, the Final Titan Eren appears as a majestic and imposing figure, towering above all others.
Final Titan Eren has a broad neck that stretches several meters in height. It towers over the landscape, dwarfing everything in its path as it moves across the land. The upper body of Eren is suspended by tendrils connected to the ground, creating an appearance akin to a colossal creature being controlled by strings.
Before transforming into the Final Titan Eren, Eren had witnessed Gabi’s death. Although this transformation is connected to the immense power of Ymir, it also signifies a dramatic shift in Eren’s character, leading to a more formidable and unique presence.
According to recent CGI images, the form of Final Titan Eren is almost as tall as the Shiganshina district where he grew up. The neck of Eren’s Founding Titan stretches nearly the entire width of the district, while its skeletal structure extends from one end of the area to the other.
Shiganshina is located at the southernmost part of Wall Maria—the largest wall that encloses the three districts. Unfortunately, Shiganshina has since been reduced to ruins due to the Rumbling.
