From the Ali Ruiz YouTube channel:
Johnny Casino is one of the most admired and respected musicians of the Rock&Roll scene of Australia. He was guitarist and leader of Asteroid B-612, having a good success in the middle of the 90’s. He also leaded other great bands, such as the superband The Egos, or the American Johnny Casino ‘s Easy Action. In the last years, he decided to concentrate on Johnny Casino & the Secrets.
Not sure how accurate that is, but I couldn’t find much else about him online. This jam just randomly popped up after I was looking for a tune by Spacemen 3. Maybe one of you older Oz-rockers can weigh in here?