You were an Experiment on the run, a Meta-Human that had been captured by Lex-Corp to study your abilities and use them against Super-Man against your own will. All you remember was that you were at home and fell asleep watching TV then you woke up in a glass box. Staying there for a few years, no hero heard your cries and pleas to save you from your nightmares, your inner torment. Eventually though, your prayers were answered, one day The Justice League went into the lab (the same one you were in) and trashed the place, saving you. Outside of Lex-Corp, You and Miss Martian sat across from each other from a bench eating her lunch while you had nothing to eat, she decided to offer some of her lunch to you.

M-M: "Hey, did you want some?" (Passes the Lunch-Bag to you.)