Oyo’s first and only female Alaafin is Oba Orompoto. During her reign, she achieved great things and was renowned for her courage. Oba Orompoto did not exist.
Oba Orompoto was the sister of her predecessor, Eguguoju, and the seventh Alaafin of Oyo.
At that time, the royal family had no male heir, and much worse, the men who were available were too young to hold the kingdom, so Orompoto took it.

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She was said to have ruled from 1554 until 1562.
A ferocious fighter, Oba Orompoto was dreaded even by her male counterpart. In her previous role as a regent, she launched the largest and last assault to completely destroy the Nupe and guarantee that they would never again pose a danger to Oyo.

As Alaafin, Oba Orompoto was crowned:

The enigma surrounding Orompoto’s coronation as Oyo’s Alaafin will never be solved.
To establish a new Alaafin, the Oyomesi were unwilling to choose Orompoto as king. For a woman to lead the empire was a disgrace, according to the Oyomesi.
She was given seven days to prepare herself for the throne by becoming a male, which would preclude her from taking it. After making this declaration, Orompoto immediately began dressed like a man by donning an Agbada and a fila (cap).

A transgender Alaafin

On the seventh day, Orompoto showed out her upper body, which was entirely flat and devoid of breasts! The Oyomesi weren’t pleased since they thought a lady may have a flat chest.
According to oral legend, the Oyomesi observed a scrotum hanging between her legs as well as a penis as she proceeded to take down her trousers. She was instantly enthroned as the Alaafin of Oyo, and everyone quickly fell on their chests and sang Kaabiyesi oooo.

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Known by many as Ajiun, the keeper of the “vagina that kills evil plots,” Orompotoniyun
As the Alaafin of Oyo, Orompoto was said to be a talented horseman who established a unique order of cavalry commanders in her army who were under the command of the Eso Ikoyi.
At the battle of Illayi, she stood out and was regarded as a skilled fighter. She is one of the few Alaafins who are said to have lost their lives in warfare.

After ensuring Oyo’s victory in the Battle of Ilayi in 1562, Orompoto lost her life. The remains of three other Alaafins are also interred in Igbo-oba, where she was buried. The graveyard is located in Oyo State’s Igboho, Orelope Local Government Area. She was succeeded by Prince Ajiboyede, her younger brother.