If you are looking for the exact moment the protagonist sheds his humanity to save humanity, The Short Answer
actually gained the power (the flashback). 1. The Big Reveal: Season 1, Episode 7 & 8 While Eren is seemingly eaten in Episode 5, he makes his triumphant—and mysterious—debut in his Titan form shortly after. Episode 7: " Small Blade " : We see a "Rogue Titan" appearing to fight other Pure Titans instead of humans. Episode 8: " Hearing the Heartbeat " : This is the definitive episode where the Rogue Titan is revealed to be Eren Jaeger. He emerges from the nape of the Titan's neck in front of a shocked Mikasa and Armin. Reddit +2 2. The First Controlled Transformation: Season 1, Episode 9 In Episode 9: " Whereabouts of His Left Arm ," Eren transforms intentionally for the first time while in human form. He creates a partial skeleton and arm to shield Mikasa and Armin from a cannonball fired by the panicked Garrison Regiment. Reddit +1 3. The Origin Story: Season 3, Episode 20 To understand in which episode eren becomes titan
Eren Yeager first transforms into a Titan in , titled "Hearing the Heartbeat: The Battle of Trost, Part 4." If you are looking for the exact moment
For the first time, the Survey Corps had a way to fight back on equal footing. Episode 7: " Small Blade " : We
If you’re revisiting the series, you can find these episodes on major streaming platforms like (depending on your region). For the "Death": Watch Episode 5. For the Rampage: Watch Episode 7. For the Reveal: Watch Episode 8.