She is one of several heroes defeated by an unknown cosmic being, she is sent by Luma to warn the Green Lanterns and the United Planets.
- Strong Girl was created by Gardner Fox and Gil Kane, first appearing in Green Lantern (Volume 2) #32. However, in the Prime Earth continuity Strong Girl first appeared as part of the New 52 DC Universe in The Green Lantern #9 by Scott Snyder and Jim Cheung.
- 5 Appearances of Marta of Thronn (Prime Earth)
- 1 Images featuring Marta of Thronn (Prime Earth)
- Quotations by or about Marta of Thronn (Prime Earth)
- Character Gallery: Marta of Thronn (Prime Earth)