Orlin

An Ascended Ancient who showed the peole of Velona how to construct advanced weapons to defend themselves agnist the Goa'uld. After the Goa'uld threat had been adverted the people began to plan the conquest of other worlds. The others of Orlin's kind came and wiped them out to "correct" Orlin's mistake -- sentencing him to live alone on the desolated planet.

While hiding out in Samantha Carter's house Orlin builds a small, single detination Stargate and returns to Velona. Where the others have returned, he tells Sam, and have given him a second chance. They help him to Ascend once again to an ethereal form, and he destroys the weapon and leaves.