Sally is a brown chipmunk with dark auburn hair that connects to the stripe going down her back and ending on her tail. Her face has a lighter brown patch in which her large blue eyes are settled. Her clothes consist of black shorts with white rimming, dark blue boots with white outlines on the buckles, and white gloves with her Ring-Blades. She wears a closed blue vest with a black crop-top hidden underneath. Her tan-colored underbelly can be seen in the her midriff.
A younger Sally wore an outfit inspired by her younger self from the Sonic the Hedgehog animated series episode "Blast to the Past, Part 1" though with the addition of white gloves. She has also been seen in white pajamas decorated with acorn designs. When she was slightly older, she started wearing her hair (now shorter) in a ponytail, and sported an open blue vest with a collar, with a black tube-top underneath, black sports pants held up by a white belt with a square, golden buckle, and wore a pair of blue and white sneakers.
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Sally appears as a guest character in Marvel's Spider-Man: Webbed Champion, voiced by Lacey Chabert. She appears alongside Sonic, Tails, Knuckles and Sticks in the crossover multi-part finale "Legendary Universes". Officially appearing in "Part 3: Unlimited Speed", she and her fellow Freedom Fighters help Spider-Man's team defeat EggRobo and Dr. Robotnik and solve the origins of Jarvis' robot body. During the episode, she becomes very good friends and partners with Mary Jane Watson / Tigra, as they both view each other as dedicated princesses and support each other's relationships with their teams' leaders.
Sally is also a supporting character in Comic Con Incorporated, on which she and her friends Sonic, Tails and Knuckles are roomers in the titular fictional hotel. She enjoys the gym section, the swimming park and nearby beach (as she is shown surfing alongside Tigra, whom she is friends with), and is also a good friend of Sabrina Spellman. First having a silent cameo in "First Marvelous Day", Sally appears officially in "Effective Fitness", on which she and Tigra go surfing with Terra.
- Name: Sally Acorn
- Nickname: Sal, Sally-girl, Princess, Angel of Mobius (Justice League: Rings of the Force)
- Gender: Female
- Age: 14
- Alignment: Good
- Favorite food:
- Friends: Nicole the Holo-Lynx (best friend and surrogate sister), Bunnie Rabbot (best friend), Sonic the Hedgehog (on and off love interest), Miles "Tails" Prower, Antoine D'Coolette, Rotor the Walrus, Knuckles the Echidna, Amy Rose, Cream the Rabbit, Princess Elise III, Chip, Sticks the Badger, Sabrina Spellman (Archie Comics co-star), Mary Jane Watson / Tigra (Marvel's Spider-Man: Webbed Champion)
- Allies: Team Chaotix (Vector the Crocodile, Espio the Chameleon, Charmy Bee), Big the Cat, Rouge the Bat, Shadow the Hedgehog (sometimes), Blaze the Cat, Silver the Hedgehog, Justice League (Justice League: Rings of the Force)
- Enemies: Dr. Eggman, Fiona Fox, Metal Sonic, Chaos (formally), Eggman Nega, Black Doom, Dark Gaia (Sonic Unleashed), Time Eater (Sonic Generations), The Deadly Six, Infinite
- Kath Soucie (Sonic: Rebirth series, Tekken 7 (an alternate skin to her Post-SGW/Player One attire; voiced by Tara Strong)
- Lacey Chabert (Marvel's Spider-Man: Webbed Champion)
- Ashly Burch (Sonic: Mobius Heroes)
- Janet Varney (The Knothole Freedom Fighters)
- Tara Strong (Tekken X Disney Universe and Tekken 7)
- Daisy Ridley (James Cameron's Sonic Cinematic Universe, voice and motion capture)