Yuka succeeded Arunta as the second leader in the supposed 'Age of Culture' experienced by the Aboriginal Union. Born in 1601, his passion for visual art combined with his brilliant political skill made him an excellent choice to lead the Union. He came to power in 1623 and died in 1648, which makes him one of the longest ruling Union leaders.
Yuka is mainly credited for creating the first written alphabet used by the Union. This began almost immediately after his coming to power and continued until his death. Two years after, a finalised alphabet was established by Banjora, the following leader.
He was also noted in history for his loyalty to the traditions of the Union.