Pantera Onesie Dad's Little Thrasher. Need Pantera Baby Clothes for your Littlerocker? Pantera Baby Onesies and Baby Rock T-shirts are available at Littlerockstore. This Pantera Dad's Little Thrasher Onesie is 100% Official merchandise and made of 100% soft cotton. A free Littlerockstore mini Inspiration Book comes with every order.