Possible lines.
"I am a child, Struck by lightning, forged in pain and hardened by relief. I am the being that hits but you can't strike back. My name is lightningman, and I will protect this world with my life." I growl in Sombra's / Tirek's ear. For the first time, they looked scared as they looked past the translucent eyeholes of my mask and saw the pure anger in my eyes.
With bones of steel
and power unparalleled.
He who defeats the darkness
the lightning herald.
At the end of season 3. When the elements shoot twilight. They also shoot lightningman. and when twilight comes back. lightningman doesn't. they think he is dead, but in reality, he was just back home.