Kol Mikaelson wanted revenge on his brother for locking him in a coffin for 900 years, which is why, after learning that there is a new doppelganger in the world that Klaus is so eager to get, He went in search of this girl. He searched for her for several years, and finally found it. Right now, this girl was in the same bar with him, and Kol was watching her while drinking his whiskey.