Sultan Alâeddin

Sultan Alaeddin Keykubad was the Sultan of the Seljuk Sultanate of Rum. He worked with Ertugrul, putting his full trust in him in season 4. He also gave him the title of Uç Bey in season 3.

Family
Sultans Alaeddin had 2 wives - One Greek and Ayoubi, and each have 1 son. His first wife Mahperi Hatun had Giyaseddin, who later becomes the Sultan. His second wife, a Greek, had Kiric Arslan, who was the rightful heir to the throne, but was later killed at age 46-47 along with his mother in Kayseri by the order of Saadettin Köpek and Mahperi Hatun.