Rose Tyler (Sea Devil Earth)

Empress Rose Tyler was an alternate version of Rose Tyler who originated from an alternate timeline created by a temporal paradox caused by a meeting between the Tenth and Thirteenth Doctors.

Freedom fighter
Rose was born in an alternate timeline in which the Earth was ruled by the Sea Devils. She grew up to become a part of a resistance against the reptilian rulers, (COMIC: Alternating Current) with wanted posters of her being put up around London. (COMIC: A Little Help from My Friends) During her battles, she became separated from her parents Jackie and a still-living Pete Tyler, who were taken into slavery by the Sea Devils.

In 2020, the battle took an unexpected turn when the Tenth Doctor appeared, informing her that something was wrong with the timeline. After reluctantly joining him in his TARDIS, they set out to undo the temporal paradox that had brought her timeline into existence. Teaming up with the Thirteenth Doctor and her companions, alongside a rogue Skithra Queen, they prevented the premature awakening of the Sea Devils at the Raven Peninsula in 1903, and rescued Nikola Tesla and Thomas Edison from the Skithra, restoring the timeline back to normal.

Having now travelled through the Time Vortex, Rose managed to survive the timeline rewrite. Realising their was nothing left for her on this new Earth now that the parents she knew no longer existed, and realising that fighting was all she was good at, she requested that the Doctor drop her off on another conquered planet so as to keep fighting, and to help them achieve the same level of peace that Earth now had. (COMIC: Alternating Current)

Leading an empire
Left to her own devices, Rose continued to liberate planets, eventually forming an empire's worth of followers. After crowing herself as an empress, Rose began to prepare her space fleet to end all war in the galaxy. Over time, she began to form a psio-temporal link with her counterpart from the primary N-Space timeline experiencing flashes of her counterpart's life in Pete's World. Rose sent out D'Pau to find the Doctor so he could aid her in making sense of the visions. When D'Pau brought the Eleventh Doctor to her on Creerm, Rose had him locked up while her technicians examined the TARDIS.

After briefing her fleet on its flight path, Rose was ambushed the Eleventh Doctor, now joined by the Eighth Doctor and her counterpart, who had been brought through from Pete's World by the link. As Rose spoke to her counterpart, the Eleventh Doctor summoned his TARDIS around her, taking her to a planet she'd liberated. Though the former oppressed were now thriving, the Doctor pointed out that the former oppressors were now slaves. Despondent, Rose heeded the Doctor's advice to turn her empire into one of peace. Returning she discovered that D'Pau had overthrown her and allied with the Sontarans. After the Doctors had deduced how the Sontarans had reached Creerm, they brought the two Roses to the centre of the fleet and had them touch, the Blinovitch Limitation Effect, sending the Sontarans away. Retaking control of her empire, Rose bid goodbye to the Eleventh Doctor and set about turning it into a force for peace. (COMIC: Empire of the Wolf)