Stargate: Every Villain Ranked Worst To Best

Michael is the result of good intentions paving the way to damnation. Lt. Michael Kenmore woke up one day in the Atlantis medical lab with no memory. He's told that he was a marine from Texas and that he was injured in a recent battle against the Wraith. Everything seems a little strange to him and he feels that nobody accepts him, apart from Teyla Emmagan.

As time passes, Michael feels more and more disconnected, until he stumbles upon evidence that he isn't human at all. He's a Wraith. He's been transformed by a retrovirus created by Dr. Carson Beckett and he is a test subject to see if Wraith can be fully reverted to human. Enraged, Michael flees from Atlantis and swears vengeance upon them.

Michael becomes a recurring element to the Atlantis Expedition. He is rejected by the Wraith, who associate him with the stench of humanity and he rejects humanity due to their weakness. He starts to carve out his own niche of genetic experiments and a small cadre of devoted followers. His efforts to perfect his own virus end up wiping out entire worlds and threatening the shaky stability of the Pegasus Galaxy itself.