Born in Nigeria, Aina Onabolu established himself as a foundational figure in the development of modern art within his home country. He was instrumental in advocating for the inclusion of fine arts in the national education system, challenging colonial-era perceptions of African artistic capabilities through his own rigorous practice.

Onabolu was primarily known for his portraiture, which emphasized technical precision and environmental observation. His work served as a precursor to the broader modernist movements that would define Nigerian art throughout the mid-20th century, setting a standard for academic painting styles in the region.

His legacy continues to be examined in contemporary institutional surveys of African modernism. Recent curatorial efforts, including upcoming exhibitions at the Tate Modern, highlight his role as a progenitor of the modern Nigerian art tradition.