The twins Widet and Poppet from the novel "The Night Circus" by Erin Morgenstern.
I read the book over the summer and it was really magical. I got lost in an imaginary world full of magic and illusions; the writing style was so mesmerizing. The plot was a bit slow paced, but the characters and the settings are unforgettable. I recommend reading this!
The Night Circus, Widget and Poppet (c) Erin Morgenstern