The Magnificent Century

*Princess Isabella Fortuna is a princess of Castile and Leon who was taken into the harem.

• Firuze Hatun (Humeyra) is one of the girls brought to Hurrem's palace. For a time, she served as nanny to Shehzade Cihangir and personal servant to Mihrimah.
  *Sadyka Khatun (Victoria) is the personal maid of the Valide Sultan, then the maid of Hatice.
• Afife Khatun is the wet nurse of Sultan Suleiman, the mother of Yahya Efendi.
  *Merjan-aga is a eunuch, the chief aga of the harem, a servant of Shah-i-Khuban-sultan.
• Sheker-aga is a friend of Gulya-aga and Sumbyulya-aga.

Mahidevran Sultan was Suleiman's concubine and the mother of Shehzade Mustafa. She was Hurrem's main rival.

Emir is an officer in the palace guard. He accompanies Katya and covers for her in risky situations. Hayreddin Barbarossa is a famous admiral and a family friend. He admires Katya's skills and gives her a rare bow.
Malkoçoğlu Balı Bey is a military leader and one of the most prominent heroes.

*Kara-Hasan is a herbalist from the outskirts of Istanbul. He sells rare plants and knows about poisons and antidotes.

• Rustem Pasha is an influential courtier. He sees Katya as a threat and tries to discredit her.
  Gulshah Khatun is Hurrem's senior servant. She is strict and disapproves of Katya's hobbies. Ayşe Kalfa is the mentor of the girls in the harem. She shares her knowledge of herbs.
  Gulfem Hatun was Suleiman's former concubine and the mother of the shehzade who died in infancy. A friend of Hatice Sultan, she was for a time the harem's khaznedar.

*Yanar is Katya's horse. Swift and willful, she is a faithful companion.

• Esma-Khatun is Katya's personal servant. She is loyal and keeps secrets.
  *Daye-Khatun is Katya's nurse and confidant. She helps conceal her training.
• Fahriye-Kalfa is a young servant and Esma's friend. She admires Katya and passes on messages.
  *Sümbül Aga is the chief eunuch of the harem, originally from Egypt. Smart and cunning, he helps the girls settle into the palace.
• Pargalı Ibrahim Pasha is a friend and ally of the Sultan, later the 31st Grand Vizier of the Ottoman Empire. Husband of Hatice Sultan.
  *Nigar Kalfa is a resourceful harem servant and Hurrem's ally. She helps her adapt and teaches her the intricacies of the palace.
• Gul Agha is one of the palace eunuchs, a unique comic character, and Hurrem's loyal servant.
  *Matrakchi Nasuh Efendi - historian, friend of Ibrahim Pasha.
• Gulshakh Khatun - servant of Mahidevran, later kalfa of Hurrem.
  Esma Khatun is Hurrem Sultan's servant and nanny of her children.

*Suleiman (55–60 years old) – Sultan of the Ottoman Empire, Katya's father. He admires her intelligence and determination.

• Hurrem Sultan (45–50 years old) – Katya's mother. Wise and caring, she teaches diplomacy and caution.
  Mehmed Suleymanovich Osmanoglu (21-22 years old) is Katya's brother and friend. He trains with her, supports her, and warns her against risks. Selim Suleymanovich Osmanoglu (50 years old) is Katya's brother and friend. He is reasonable, gives wise advice, and admires Katya's tenacity.
  *Bayazid Suleymanovich Osmanoglu (36 years old) is the Shahzade. Ambitious, he involves Katya in political games.
• Jahangir Suleymanovich Osmanoglu (21-22 years old) is the younger Shahzade. A scientist, he helps with herbal research.
  *Mihrimah Suleymanovna Osmanoglu (50 years old) – Sultana (Sultan Mihrimah). She is a mentor, teaching the intricacies of palace life.
• Hatice Sultan – Suleiman's younger sister. Her fate is closely intertwined with Ibrahim Pasha's.
  *Aishe Hafsa Sultan (Valide Sultan) is Suleiman’s mother, widow of Sultan Selim I. One of the most influential women in the harem.
• Beyhan Sultan is Suleiman’s second sister.
  *Shah-i-Khuban Sultan is another sister of the Sultan.
• Fatma Sultan is the third sister of Suleiman.