Board Thread:General Discussion/@comment-1255618-20131207105231/@comment-24204226-20140502025845

It was Raph's fault that Spike mutated into Slash by allowing him access to the mutagen even if it was unintentional. However, the events that followed were unforeseen to him. While it's true that Spike only learned of the "hurtful" side of Raph's brothers through Raph's rants to him, I think that Raph thought they were just that, rants. There was no way he could have predicted that someone he considered his confidant would turn on him when Raph chose to help his brothers over helping Slash "crime fight."