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Efi: The world is a scary place. Even here, in Numbani. We needed something to protect us. Enter the OR15 defense bots. They took the old "Idina" models from the crisis and gave them a complete makeover. They kept us safe... for a while. I was at the airport when Doomfist attacked. Poor bots... didn't stand a chance. Everyone else gave up on you! But I saw what you could be. So, I rebuilt you! Updated your programming and gave you a heart.
Orisa: New personality module installed. System rebooting. OR15 on-line.
Efi: *giggles* No, that's no good! Every great hero needs a real name. What about... Orisa? I made you to be strong and brave. You still have a lot to learn and you'll probably mess up sometimes. But I know you'll become the hero we need.
Orisa: My name is Orisa. I will keep you safe. That is my primary function.