Fire Emblem: Three Houses dropped the bomb by releasing a trailer that reveals the Fourth House, the Ashen Wolves. Dubbed the Secret Shadow of Garreg Mach, the new home features four new characters who will participate in the additional side story that will be released on February 13. While we don't know much about the new characters right now, here's what we know so far about the four new characters featured in the Cindered Shadows trailer.
Yuri
Yuri is the head of the House of Ashen Wolves. He explains in his dialogue that the pupils of the house are impatient, but without a teacher to guide them. While he would appreciate it if his classmates were under the guidance of a teacher, he is hesitant to engage Byleth and the other Garreg Mach students in the conflict they face.
Yuri's class is not known, but it is shown that he changes places with Byleth in one of the new maps, making him capable of being able to use Faith magic and swords. This could make him a Grandmaster, similar to Robin's class from Fire Emblem: Awakening, but we'll have to find out more information is revealed.
">
Balthus
Balthus is the tough guy of the War Master class, posing as the Almighty King of Grappling. He has a hero relic called Varja-Mushti, which also has a fighting art called Pneuma Gale. It is currently unknown what crest he has that makes him capable of wielding the Legendary weapon. Due to his ability to use Varja-Mushti, he could have a huge, important role in the side story.