Justine Gaga was born in 1974 in Douala, to a photographer father and a housewife mother. Without realizing it, everything made her a future artist. Thus, from early childhood, she had grown to love the pictures, admiring the photographs and advertising plates she watched in her town. This is what leads her in 1996 after high school, to learn serigraphy.

When she discovers the painter Viking, her ambitions changed. She stops serigraphy and moves towards a more artistic career. It is in the workshops of Joe Kessy, Sabastiene and Viking that Justine was initiated to painting, working with sand, earth, and paper.