Linka Loud is the female version of Lincoln Loud.

1. Appearance - She looks a lot like Lincoln but unlike her male counterpart, she wears a blouse, dark blue skirt and has much longer hair with an orange hair clip in the front. She also wears white earrings similar to Lola's. Her toenails are also painted pink. She wears red shoes and white knee-high socks as seen in concept art, although she appears to be exclusively shoeless in that episode.
2. Personality - Despite having so many brothers, Linka doesn't seem to be much of a tomboy--the dominant color in her bedroom is pink and she's shown to keep stuffed animals in lieu of the action figures that Lincoln keeps in his room.

Trivia: 

1. Much like her male counterpart, she is also voiced by Collin Dean (uncredited) and their respective foreign dubbers. She is the only one to be voiced be all the same actor as her counterpart in all dubs. For the Latin American, Hebrew, Polish and Hungarian cases, they would be their first female role.
2. In her original design, her hair was styled into two downward pigtails that were similar to Lana's hairstyle.
3. Linka is a Hungarian name, meaning "mannish".
4. Her Polish name is Hircia from Hieronima.
5. Her hair also looks similar to Lola's, due to the cowlick hairstyle. The only difference is that Lola doesn't have white hair.
6. In some captions and translations her name is translated to "Linda".