April Ritzenthaler (née Hermann) is one of the original founders of Texas Roller Derby (TXRD), formerly known as Texas Lonestar Rollergirls, a banked track roller derby league based in Austin, Texas. Ritzenthaler, aka La Muerta (originally "Queen Destroyer"), was featured in "Hell on Wheels," a documentary released in 2007 about the creation of the all-female roller derby league founded in 2001 that sparked the modern derby revival. In 2006, she also appeared in a 13-episode reality television s ...