Who said "There is no limit to what I can become."?

This quote is attributed to Cheetah.

There is no limit to what I can become. - Cheetah

"There is no limit to what I can become."

Cheetah Imagination

"I always get what I want, and I want everything."

"You could never understand what it's like to be invisible."

"I'm not going back to being ordinary. Never."

"They always looked right through me."

"Imagination is more powerful than knowledge."

"The world is full of wonders if you know where to look."

"You have the imagination of a child, Lucy"

"The world is full of mysteries waiting to be solved."