A Normal Person
A Normal Person is someone who can blend in so well, they might as well be invisible. They don't make waves, they don't cause ripples.
"She's invisible. I can't even see her.", @InvisibleBro
"He's like a ghost. He doesn't make waves, he doesn't cause ripples.", @RippleHater
"They're invisible. They don't make waves, they don't cause ripples. Just like me.", @InvisibleBro2"