Who was Shaka’s half-brother?

Shaka’s half-brother was Sigujana kaSenzangakhona. He was the son of Senzangakhona, Shaka’s father, and was initially set to ascend the throne after Senzangakhona’s death. However, Mkabayi, Shaka’s influential aunt, recognized Sigujana’s weaknesses and instead supported Shaka’s claim to the throne, leading to Sigujana’s flight and Shaka’s eventual rise to power [[1]](https://en.wikipedia.org/wiki/Mkabayi_kaJama).