The Nine Titans were the descendants of Ymir and gifts to the Eldian race in the Attack On Titan universe. They are famously recognized for their intimidating appearance, unique abilities, and most importantly, their towering size. Nobody knows when the subordinate eight Titans branched out from the Founding Titan. However, it seems that all Nine Titans were under the control of a different family at different points in history.
Source：https://www.cbr.com/attack-on-titan-height-ranking/
