Guardian – This T-800 cyborg infiltrator has been sent back in time to protect Sarah Connor since she was a child, and to train her so that she would be ready for the struggles ahead. Guardian, or ‘Pops’ as Sarah affectionately calls him, has spent a long time amongst humans, learning to blend in and becoming a perfect bodyguard for Sarah. His organic tissues might have aged, but his armoured endoskeleton is as powerful as ever – as he puts it, he is “old, but not obsolete”.