Jill is Sonic Sr. and Nikki's daughter and Sonic Jr.'s sister
Friends[]
Sonic the Hedgehog Jr. (Brother)
Sarah the Hedgehog (Cousin)
Raymond the Hedgehog (Cousin)
Kim the Hedgehog (Cousin)
Ash the Hedgehog (Cousin)
Ethan the Hedgehog (Cousin)
Derek the Hedgehog (Cousin)
Silver the Hedgehog (Cousin)
Cathy the Hedgehog (Best Friend)
Polly the Hedgehog
Nestor the Hedgehog
Julianne the Cat
Hank the Echidna
Domino the Echidna
Megan the Hedgehog
Penelope the Rabbit
Tim "Flick" Prower
Blaze the Cat
Thrash the Hedgehog (Half-Brother)
Wren the Hedgehog
Barbara the Fox
Elsa the Bird
Alex the Hedgehog
Crystal the Ottsel
Rivals[]
Kim the Hedgehog (Cousin Rival)
Enemies[]
Dr. Eggman