Ymir Fritz, also known as the Founder, is the founder of the Titan Bloodline. The Subjects of Ymir. She was the first human to be able to transform into a Titan, as the one who gained the original Power of the Titans roughly around 2,000 years prior the story, after coming into contact with an anomaly. She was also a slave of Eldia and a concubine to King Fritz, who used her as a weapon to build the Eldian Empire, defeat his enemies, and begin a global conquest. After her death, her spirit was split into the Nine Titans. As a result, she is an ancestor to Karl Fritz, Rod Reiss, Dina Fritz, Zeke Yeager, Historia Reiss, and all Subjects of Ymir in the world. Being the spirit who produces every single Titan transformation in the story, she is responsible for all the events of the series, along with her family.