Board Thread:General Discussion/@comment-6747658-20130225232210/@comment-6778463-20130227221735

199.255.1.20 wrote: When speaking to Sundowner in the server room he clearly states

"I chose this"

I am just going to quote this part from his wiki page:

''He then began work on retrieving Big Boss's remains from the Patriots for the Paradise Lost Army, leading to his capture. As a prisoner, the Patriots used Raiden as a test subject for experiments in exoskeletal enhancement surgery, during which he had his head and spine excised from his body from his lower jaw down and subsequently grafted into an enhanced synthetic body.''

It clearly states he had no choice in becoming a cyborg. The "I chose this" is more so referring to him accepting who and what he is after his Jack the Ripper persona re-emerges.