PLEASE CHECK OUT THE REWRITTEN VERSION- The Experimentalist
You are an scp. Secure, contain, protect. Tch, right. You're called SCP-3042, your real name is (Y/N), though. You are a shape shifter. Well kind of. Your molecules and DNA are unstable and there for can take the shape of anything you chose, sometimes it happens automatically, changing to best fit your surrounding. You have been classified as Euclid, and have been staying at the Foundation for a few years. With your unique power, you can practically get out of any room or teleport, by focusing your molecules into a different place. You also aren't affected by anything, for example, SCP-409 had no affect on you, and SCP-178 couldn't even touch you, seeing as he practically couldn't touch you. But, let's see how you face with the dreaded Doctor, SCP-49.
After days of falling under a terrible illness, Y/n is visited by SCP-049 night after night. He sensed the disease in her and realised she would not heal.
So, he took her in and made sure was better before her time. It took months for her to heal but she managed to overcome her life threatening illness before it took over.
However, Y/n becomes attached to 049 and refuses to leave his care.