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)
- Sarah the Hedgehog (Daughter)
- 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
Love Interests
- None
Gallery
Lou's old look from Sonic the Hedgehog: Dawn of the New World through Sonic Unleashed 3: Werehogs vs. Vampires
Lou in Lou the Detective Girl
Lou's old look from Sonic the Hedgehog (2006)-Sonic the Hedgehog: Spirit Tracks
Lou is worried
Lou in Charrie Maker
Lou
Lou by User:Cameron33268110
Lou without her jacket
Lou when she was a baby
Lou when she was 10 years old
Lou hugging Sonic
Lou's look in Sonic Boom
Lou smiling