Wonder Girl 2's real name is Cassandra Sandsmark, also known as "Cassie." Her mother is the famed Archeologist Dr. Helena Sandsmark. She's a student at the St. Elias Academy For Girls in Gateway City. She is the president of the school's "Wonder Woman Fan Club." She only show up in Teen Titans Go! #54. She was never shown in Teen Titans the animated series like the first wonder girl wasn't shown in action. Wonder Girl 2 was a replacment side kick for Wonder Woman when Wonder Girl left.