How Many Times Can Eren Transform?

One confirmed transformation from the flashback, but the dialogue states that he did this multiple times. Only three consecutive and successful Titan transformations can be made while the entire body can only be hardened twice.

How many Titans can Eren turn into?

Eren possessed the power of three Titans. From his father, Eren inherited the Attack and Founding Titans. After eating Lara Tybur during the Raid on Liberio, he gained the War Hammer Titan as well.

Can Eren turn into every Titan?

But inside Eren lies an even deeper secret than he thought: he can transform into a full-sized Titan. However, his Founding Titan form is unlike the Titans he fights.