The Prison Planet — Lyle Drew

Hundreds of thousands of years before the Olympian gods named our planet Terra, she was known as Earth, home to the most advanced species at the time. Yet, modern man was still climbing the evolutionary ladder, primitive to what he would become, only then in the process of advancing from Homo erectus to Homo sapiens. Earth was also the home of a humanoid race of giants, lacking technological intelligence, but possessing mental powers that allowed them to do many incredible things.
Earth had another history that didn't begin on her, though; it started on the planet Fornac, the only inhabited planet in a binary star system located 40 light-years from Earth. Its inhabitants were comfortable traveling the void, having established twenty-one colonies within a radius of thirty light-years of Fornac. An interstellar police force, the IPF, patrolled the colonies to resolve problems and ensure their safety from invasions that never came. Life grew predictable and so the IPF's charter unwillingly came to include delivering ‘critical' shipments to the colonies, shipments that really weren't that critical. The leader of the IPF, Rutger Donnal, saw the need to put an end to the abuse of the system. His efforts to make his point bordered on treason, but he felt it was necessary. Three of the four units under his command felt as he did, eventually joining his crew on a prison planet Earth, of which they were the only inmates.
The guards on the planet overestimated their technology and underestimated the determination of Rutger's team to escape. Once his team was off Earth, they provided a safe place to live for a simian race known as the Norru, traumatized by war with the Samlec, a reptilian race. To show their appreciation, the Norru advanced Rutger's people with incredible weapons and technology, transforming them into the Talmic. Technology gave them special powers and so they changed their names to Salar, Thorn, Alik, Brizio, Forseta, Lysistra, Avisa, Idris, and Shomer, becoming legends. Together, they righted wrongs, silently fighting the Fornaceans without actively seeking them out, while making a home on the concave surface of a hollow planetoid-moon. For the longest time, they hid successfully while watching their homeworld become crueler as its power deteriorated.
Feeling that they'd repaid the Talmic's kindness, some of the Norru chose to leave the safety of their home created by the Talmic; they chose a secluded valley on Earth after her only continent began to break apart. Never, did the Norru guess that they weren't the first people to find the valley attractive. The Talmic generously agreed to transport the Norru to their new homeworld, only then learning where it was. Still they didn't object since they trusted the Norru. Before leaving, the Talmic decided to explore the valley, just to ensure that it was as safe as the Norru thought; they were joined by their friend Siven, a Norru simian. They actually learned that another people had been on Earth millions of years before they arrived when they stumbled across an abandoned city in the valley once belonging to the Annu.
The Fornaceans returned to Earth, determined to find Rutger and his crew, and bring them to justice once more. A battle ensued on Earth that spilled over to Fornac; the result was the technological decline of the Fornaceans, thanks to the technology of the Annu, and the generosity of the Norru that forged a solid alliance of species determined to fight aggression for a peaceful galaxy.