Princess Fern was the daughter of Lord Volt and Lady Quark, the monarchy of America. During the Crisis on Infinite Earths, Earth-Six was threatened by the antimatter wave in which Princess Fern tried to stop but ultimately proven futile and she and along with Lord Volt was consumed by the wave.
- 5 Appearances of Liana (Earth-Six)
- 2 Images featuring Liana (Earth-Six)
- Quotations by or about Liana (Earth-Six)
- Character Gallery: Liana (Earth-Six)