Yes, most people are born with Quirks. It was something not as frequent in the past, but now it is more common to have one than to not. Though, that appears to not be the case with many of the people here...

[Was it something just exclusive to his world? He's not sure.]

[But hearing the praise from Darkwing, he blinks in surprise before nodding with a smile. And forgive him if he's a little flushed under his feathers.]

Thank you, sir... I do my best to try and become the best pro hero I can be. To hear a genuine pro giving me praise... it is a high honour. I will do my best to be a terror that flaps in the night, striking fear in the hearts of people like these villains.

[He won't let you down, Darkwing!]