When Eren first transforms, he is a mindless, 15-meter berserker. Unlike the sculpted Armored or Beast Titans, Eren’s base form looks like raw muscle stretched over a skeleton.

Originally lacking defensive capabilities, Eren gains the ability to harden his Titan’s skin after consuming the "Armor" serum in Season 3.

Final Episode of Season 1 (Battle of Stohess)

Eren Titan Form __top__ Jun 2026

When Eren first transforms, he is a mindless, 15-meter berserker. Unlike the sculpted Armored or Beast Titans, Eren’s base form looks like raw muscle stretched over a skeleton.

Originally lacking defensive capabilities, Eren gains the ability to harden his Titan’s skin after consuming the "Armor" serum in Season 3. eren titan form

Final Episode of Season 1 (Battle of Stohess) When Eren first transforms, he is a mindless,