Citron Ball is the second ability for Citron in Plants vs. Zombies: Garden Warfare 2. When used, Citron will curl up in a ball and move at a faster speed than usual. Spin Dash, Hyper Ball and Assault Mode are available to use whilst in this form.
Who wouldn't want to transform into a ball and roll past all of life's problems? The Citron doesn't just roll, he dashes into foes and rolls with super speed and super style.