Rann and Thanagar
When Rann was transported into Thanagar’s system, tensions between the old adversaries were already high. Matters were made worse with the intervention of Superboy Prime. Acting under orders from Alexander Luthor, Jr. he shifted Thanagar’s orbit closer to the sun, making the planet unlivable.
At first, Rann attempted to save as many of the Thanagarians as they could, with the assistance of the Omega Men and L.E.G.I.O.N. Sardath offered Rann as a refuge for the Thanagarians, but many, believing that the arrival of Rann in the system is what caused their planet’s destruction, would not take the assistance of their old enemy. Once as many of the willing as possible were evacuated, Rann found itself in a very tense situation. The planet was full of Thanagarian refugees, and ripe for war. The Cult of Seven Devils, a death cult which worshiped Starbreaker and Onimar Synn, seized the opportunity and started a war between the Thanagarians and the Rannians.
Rann found allies in the Thanagarian-linked heroes Hawkman and Hawkgirl and later the Thanagarian soldier Shayera Thal, known as Hawkwoman. Throneworld, with the Prince Gayvn/Will Payton Starman, also allied with Rann, as well as Tigorr and his Omega Men. The Warlords of Okaara, the Dominion, and Colu also allied with Rann. Mercenaries from Khund are eventually persuaded by Tigorr to fight for Rann, although they were dispatched by the Cult of Seven Devils to scour for Nth metal. Blackfire allied herself with the heroes of Rann after an attack on Polara resulted in a significant Thanagar loss. Thanagar received aid from the Psions, enemies of the Omega Men and of the Vega system in general. The shapeshifters of Durla and the Citadel, another Vega System menace, also allied with the Thanagarians. Blackfire and the Tamaraneans allied themselves with the Thanagarians initially, although Blackfire is merely playing both sides in a bid for power and a search for a new homeworld, the past ones being destroyed by the Psions, a Sun Eater, and Imperiex, respectively. The Khunds were originally hired by the Cult of Seven Devils to scour for Nth Metal, but were bought off by Tigorr and fought for the Rannian forces.
After fighting off both the Thangarians and the threat of a resurrected Onimar Synn, Rann found itself again in conflict when the Tamaraneans and Thanagarian remnants took over Polara, while a space-time rift appeared near the Polaris Galaxy. Rannian forces team up with Green Lanterns, Thanagians, the L.E.G.I.O.N. and many other spacefaring races in order to combat the rift.
Later Thanagar's orbit was corrected by members of the Green Lantern Corps and its surface was repaired through terraforming.
To defeat Synnar and Lady Styx, Rann's atmosphere was explosively discharged into outer space with Rann's entire population zeta beamed to a recently depopulated Throneworld.
During this time Throneworld is renamed New Rann.
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