Beck (The Lady in the Lake)
From Tardis Wiki, the free Doctor Who reference
Beck was a Proto-Time Lord clone of River Song
Beck was created by Madame Kovarian on Demons Run, along with six other clones. After the Eleventh Doctor raided Demons Run, Beck escaped on a ship with the other six clones. As part of his religious cult, Lake convinced Beck to die multiple times on Terminus Prime so he could covertly study regeneration and find out how long he was able to live. (AUDIO: The Lady in the Lake)
After Beck and the other six initial clones were lost following the Doctor's raid of Demons Run and River married the Doctor instead of killing him, Kovarian created at least four additional clones: Brooke, H-One, H-Two, and O. (AUDIO: The Furies)
