There are at least 2 artists with this name: an all-female heavy metal band from Ljubljana, Slovenia and a rock ‘n’ roll two-piece from Johannesburg, South Africa.
These are photos from concerts where Hellcats played, so they may be of other bands that played the concert as well.
Swiss Rock Cruise 2021 Oct 8, 2021 Romanshorn, Switzerland Uploaded by Hennessy666
Rock on the Lawns Mar 16, 2019 Johannesburg, Gauteng, South Africa Uploaded by Brett Hilliar
D.O.A. / Nomeansno / Death Sentence / Hellcats / Roots Roundup Aug 26, 1987 Vancouver, British Columbia, Canada Uploaded by Redhalo