Sunny Springer (サニー・スプリンガー Sanī Supuringā?) was the sister of Conny Springer and a resident in Ragako village. She was transformed into a Titan by the Beast Titan during Wall Rose's supposed breach.
Sunny was a visibly young girl with a petite build and short height. It appeared that she wore a white long sleeved shirt with a red skirt underneath. Her dark brown hair was fairly long, going down to her shoulder blades and was kept tied back in a pony tail with a red band. She kept her hair styled with trimmed bangs going straight across her forehead.
Sunny is first revealed in a flashback by her brother Conny Springer in which he remembers her playing with their little brother Martin. During this time, Conny worries for Sunny's safety as he searches their village of Ragako looking for survivors after news that Wall Rose had been breached by Titans coming from the south, the same location as their home town. It is later revealed that Sunny was one of the Titans that were created by the Beast Titan after the events of Eren and Annie's brawl in Stohess District. Her Titan is eventually killed at some point before Wall Rose was declared Titan-free.