What is a creative, catchy name for my character?

I am writing a story and I need help creating a name for the main character. She is a tomboy who comes off as dark and quiet, but once she warms up to people she is very bubbly and adventurous. I chose Andy for her first name, but what is a catchy last name that would go along great with the first? I was thinking Andy Axel, or possibly Andy Heart..? what do you think would be catchy? new suggestions would be very much obliged. :)