Volcana is a recurring supervillainess in the DC franchise.
Claire Selton developed pyrokinetic abilities at young age. She was sent to the Center of Paranormal Studies by her parents to control her power. Government agents planned to use Claire as a living weapon. She escaped custody and survived by stealing, capturing Superman's attention. Superman relocated Volcana to a deserted island to change her ways.
Volcana later left the island and returned to Metropolis where she briefly fought Supergirl.