When Eren was eaten and swallowed by the Bearded Titan, he found himself in its stomach along with the bodies of its victims. His rage at the Titans caused him to burst out of the Bearded Titan's stomach by transforming himself into the mysterious Titan and going on a rampage against them.
To sum up:
Eren survives during the Battle of the Trost because he keeps his powers and transforms fast enough to not be crystallized and regurgitated by the Titan. He keeps his powers because his spine was not damaged. Armin gained his powers by eating Bertolt's spine, as showed above.
Titan shifting power is transmitted by the consumption of spinal fluid. The Titan failed to drink eren and thus never became one of the 9 Titans.
Soon after, Grisha arrives and finds Eren, who tells him that his mother was eaten. After hearing this, Grisha takes Eren into a nearby forest and instructs him to go to the basement; before Eren can react, Grisha injects him with a Titan serum, turning Eren into a mindless Titan.
Primal Desire: The Struggle for Trost, Part 9.
When Eren was eaten and swallowed by the Bearded Titan, he found himself in its stomach along with the bodies of its victims. His rage at the Titans caused him to burst out of the Bearded Titan's stomach by transforming himself into the mysterious Titan and going on a rampage against them.
Eren Yeager
The War Hammer Titan is the final Titan to make its presence known in the series, but its impression is still a really strong one. Its mastery of crystallization means that the War Hammer Titan can easily destroy its enemies with the crafty use of its powers.
Founding Titan
Founding Titan is the first and the strongest Titan of all the nine. If the Founding Titan is someone from Royal Bloodline, then it will possess limitless power. Eren Yeager was not someone of royal blood that's why he asked for Zeke's help to use the Founding Titan to its fullest.
What number of titans are involved in the Rumbling? Several YouTubers have attempted to calculate the precise amount of wall titans by accounting for the perimeter of the walls, the Wall Titan's breadth, and the number of wall districts. It is reasonable to estimate that there are at least 500,000.
As Armin tries to rescue Eren, the Bearded Titan closes its mouth, biting one of Eren's arms off in the process, and swallows Eren, much to Armin's hysterical horror. It is unknown how Armin survived the Bearded Titan and the others afterwards, but he was no longer attacked after the deaths of his friends.
Eren and the Titans
In the end of the manga, Eren attempts to destroy the world by reviving Ymir and invoking the power of the Founding Titan. However, Mikasa ultimately kills him, which results in Titans and their powers vanishing from the world.
Eren has the same bony structure, but because his head was severed at the neck, his freaky Titan spine grows uncontrollably before connecting his torso and noggin, coming to form almost Eren's entire Founding Titan.
After the Scout Regiment's return to Trost District, Eren sees his father's memories in his dreams and comes to the realization that Dina was the Titan that killed his mother.
Not much is really known about Annie after her defeat, she has cried twice throughout the series (the second time is a spoiler) but from what evidence we can gather is that she saw that her mission was a failure and was saddened by it.
Eren bites his hand to turn into a Titan. The trigger to becoming a Titan is bleeding and the emotion of being angry.
Hannes (ハンネス Hannesu?) was a unit captain (部隊長 Butaichō?) of the Garrison. He was also a lifelong friend to the Jaeger family and was responsible for saving Mikasa and Eren from the Smiling Titan.
4 Mikasa Ackerman Has Killed 16 Titans (And 5 Humans)
1 Eren's Founding Titan
Eren's spooky skeletal Titan form was by far the biggest since it was over two hundred and twenty meters tall. Even though Eren only wanted to protect his friends and loved ones he ended up committing horrible acts that eventually led to his death.
Pieck's Cart Titan is arguably the weakest of the Nine, but it comes with several advantages. Unlike its eight brethren, the Cart Titan walks on all four legs, making it an excellent method of transport. Pieck often has large structures attached to her back, which carry both people and weapons.
The nine Titan powers were the Founding Titan, the Armored Titan, the Attack Titan, the Beast Titan, the Cart Titan, the Colossus Titan, the Female Titan, the Jaw Titan and the War Hammer Titan.
Over a thousand years ago, Ymir Fritz became the first Titan and the Founding Titan by obtaining the Power of the Titans. When she died, her split soul created the Nine Titans who razed the Marley nation to the ground.
Unlike other species, Titans did not mate, and their interactions were nonexistent with organisms other than humans; their sole purpose in life was to seek out and devour humans.
Creation. All Titans are originally humans of a race of people called the Subjects of Ymir. Ymir Fritz was the first Titan after awakening the power of the Titans. Some say she made a deal with the Devil.