Lake 1

Lake 1 was the first incarnation of Lake, a Proto-Time Lord clone of River Song.

Biography
Lake was created on Demons Run by Madame Kovarian, along with initially six other clones. Sometime after escaping Demons Run, he was tending to fuel cells with Wadi when one of the cells blew up in his face, the resulting explosion causing him to regenerate into his next incarnation. (AUDIO: The Lady in the Lake)