Stone Bunnies are the accomplices of Lady Blueberry
and, later, Benny
They first appear watching the lawn mower race between Gnomeo and Tybalt. Though aware that their team (Blue) was cheated out of their win, they do not seem to mind.
They appear later when Benny recruits them to help him take revenge on the Red team. They boost him up to a window, which he climbs in and orders the Terrafirminator lawn mower from the laptop.
They make a small appearance after that when Benny is wreaking havoc on the Red garden, enjoying the sight but then fleeing to avoid the lawn mower.
They make a final appearance in the end, celebrating the truce.