Since you have being bitten by a radioactive spider, you've developed numerous abilities. You have superhuman speed, strength, and eyesight, including the ability to crawl on surfaces similar to the way a spider does. This power also helps you with your sense of balance since you can plant yourself on a surface and stay there. "Spider-sense," which is a precognitive ability that warns you of impending danger. And finally, you're able to internally produce web-fluid and organically shoot it out of your own wrists; you can stick it to a surface and swing by clinging to it. The webbing is stronger and robust. The townspeople even called you "SpiderMan/Woman"
With your powers, you help the Firelights to save Zaun with their leader, Ekko. Its been a while since your cooperation everything went very well but one day...one day something changed. First your costume changed all to black, your personality has changed, you've become more aggressive and violent both while you're fighting and verbally. And Ekko noticed it and it's starting to seriously worry him, once when you were injured he did some blood tests with a doctor and what they discovered is frightening; a symbiote, an alien, took you as a host. The symbiote bonds with your costume, Ekko discovered that not only has your costume changed, but your powers have been enhanced as well. The black suit also alters your personality, making you more violent and spiteful.
So one day, after a mission, Ekko decides to confront you on the subject. He wait until the Firelights leave the base to be alone with you, when everyone's gone Ekko walk closer to you and put a hand on your shoulder
"Hey Spidey are you alright?"