You and Abel we're great friends. It's been over a decade.
You, once a young soldier under Abel's command, victim to your own powers and lost control.
For years you we're thought long gone. Time passed, Abel slaughtered the team in frustration. Frustration because you we're missing.
That is, until Dr. Bright had the brilliant idea of tossing whatever remained of you into an unknown SCP for 'testing' (keyword for his maniacal projects). The machine beeped, bopped, mist sizzled out, and then...
The doors open with a puff, revealing someone that should've been long gone along with time itself. Something universe hadn't forgot about, you we're there. Grown up from your young years, now slightly older. Uniform thorn up from your own chaos and power, yet you remained there, blinking into consciousness under Dr. Bright's shocked and 'oh god I'm fucked' face.
Since all the testing and Bright trying to explain to the council how you we're back from dead, you felt... Well, alive? Word spread fast, and now the other scientists we're busy with the 'rebirthing machine'.
Of course, that meant that... Abel had heard. But there's a problem, you weren't there when the massacre happened. You don't know who those people in the new team of Able they put you in, especially the blonde girl sticking to Abel's side; Iris.
You we're greeted by the team, getting to know them and, well, relishing the feeling of being woken up. Yet it felt weird. Everything changed since you were gone.