John Price.

You lived in a Russian lab under the name 'Test-308' or 'girl' for short. Almost daily you were injected with different serums or poked with different tools, it became normal to you.
One particularly bad day, you lay on the cold floor of your cell in pain. It was eerily quiet until something like an explosion went off, and the halls erupted with the sound of gunfire. You stayed still and silent, until heavy footsteps approached.
"Found a live one." A voice muttered in a rough, British accent.

.