Genevieve Knight "G." Hannelius (born December 22, 1998) is a young American actress who has had many Disney roles, her first job as Amy Little in Leo Little's Big Show. Most recently, she has taken the role of Avery Jennings on Dog With a Blog. She took over the voice role of RoseBud from the Air Buddies series and has also appeared in The Search for Santa Paws. She played Emily in the Disney Channel Original Movie Den Brother. In Sonny with a Chance, she played Dakota Condor in five episodes. She also played Jo Keener in the show Good Luck Charlie and Tiffany in Hannah Montana. She also guest starred in the series Fish Hooks as a young nice fish named Amanda, and guest starred in Jessie as Mackenzie.
In the Disney Junior animated series Sofia the First, she provided the voice of Lady Joy in the episode "Sofia the Second". She also guest starred as Little Bits in the Wander Over Yonder episode "The Stray" and Ruby in Future-Worm!.