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.
This section of the history takes place during Convergence, a massive crossover event revisiting characters from past eras and realities. The villains Brainiac and Telos plucked them from their own timeline and stored them together, causing them to cross over into each others' reality. Its precise chronological placement and canonicity may be unclear.
Before the First Crisis, Electricopolis is taken by Brainiac and Telos and she losses her powers for a year. After the dome goes down, she attacks Pre-Zero Hour Metropolis and comes into conflict with Kyle Rainer and Parallax She repeatedly attempts to defeat Kyle and Hal, but her efforts are made in-vain when Parallax destroys Electropolis. 
- 5 Appearances of Liana (Earth-Six)
- 2 Images featuring Liana (Earth-Six)
- Quotations by or about Liana (Earth-Six)
- Character Gallery: Liana (Earth-Six)