Lou is Sonic's twin sister and the lost princess of Lunatea
Friends
Sonic the Hedgehog (Twin brother)
Klonoa the Hedgehog (Adopted little brother)
Abby the Hedgehog (Adopted little sister)
Cici the Hedgehog (Cousin)
Miles "Tails" Prower
Knuckles the Echidna
Amy Rose
Tabitha the Cat
Oliver the Fox
Lewbert the Echidna
Charles the Squrriel
Spencer the Bird
Larry the Hedgehog
Lilly the Hedgehog
Odie the Hedgehog
Carrie the Rabbit
Cream the Rabbit
Dana Solo
Cammie Stewart
Sammy Nooken
Rocky the Rat
Marta Lualdi
Jur the Hedgehog
Lizzy the Hedgehog
Brook Taylor
Nikki Roberts (Future sister-in-law)
John Gibson
Luna the Hedgehog
Rivals
Shadow the Hedgehog (Future brother-in-law)
Rouge the Bat
E-123 Omega
Natalie the Hedgehog (Because of turning Half Good and Half Bad)
Enemies
Dr. Eggman
Solaris
Bailey the Dark Wizard
Cole
Ritcher