With that now said, the creators of the series continue to showcase the upcoming season with new sketches. As a result, Kyoji Asano recently released a colorful sketch of some of the Survey Corps, who will feature in the upcoming season.
This sketch released by Asano showcases Eren Yeager, Levi Ackerman, Mikasa Ackerman, Armin Arlet, Ymir, Erwin Smith, Reiner Braun and Bertolt Hoover. However, this sketch as well as many of the other released on Twitter, all showcase the enemy.
In season 2 of Attack on Titan it was revealed that Ymir, Bertolt, and Reiner were Titans and from an unknown place outside of the walls. In addition, they were the ones responsible for the original breach of the walls in season one and have been disguised as Survey Corps ever since.
It is unusual that they continue to be drawn with the other Survey Corps after their mission was revealed to fans. However, all sketches of the Survey Corps since season 2 have showcased the three former allies.
If you are unfamiliar with the series you still have time to catch up and you can read the synopsis for Attack on Titan season two below:
Eren Jaeger swore to wipe out every last Titan, but in a battle for his life he wound up becoming the thing he hates most. With his new powers, he fights for humanity's freedom facing the monsters that threaten his home. After a bittersweet victory against the Female Titan, Eren finds no time to rest—a horde of Titans is approaching Wall Rose and the battle for humanity continues!