Full Name: Lynn Logan Loud, Jr.
Also Known As: Lynn-sanity
Gender: Female ♀
Birthday: November 5, 2003
Relatives: Lynn Loud Sr. (father), Liz Loud (mother; deceased), Lori Loud, Leni Loud, Luna Loud, Luan Loud (older sisters), Lucy Loud, Lola Loud, Lana Loud, Lisa Loud (younger sisters), Jonny Quest (boyfriend)
Hair Color: Brown
Eye Color: Black
Skin Color: Fair
Red and white jersey, red and white shorts, white socks, black cleats.
- Lynn's mom died giving birth to Lisa and her dad was kidnapped by a street gang, leaving her in the care of Lori.
- Lynn is a fan of sports, with her favorite football team being the Los Angeles Rams, and her favorite player being Todd Gurley.
- Aside from playing sports, Lynn is good at playing the piano, and also plays keytar for Luna's band "Luna And The Illusions".