Luke Loud is the male version of Luna Loud.

Appearance: In contrast to Luna, who has a pixie cut, Luke's brunette hair is styled into a faux hawk. For his clothing attire, he wears black checkered pants, as well as a blue vest with a purple t-shirt with a skull on it underneath, which is similar to Luna's. Like Luna, Luke also wears purple boots and a grey belt wrapped around his pants. Also like his female counterpart, Luke also has freckles on his face. He also has the same paper clip earrings Luna has. Luke's hair is similar to one of Lincoln's classmates from "Save the Date".

Personality:

1. Luke is an aspiring rocker; however, he is shown to be rude and abrasive toward Lincoln, which completely contradicts how Luna is very caring towards Lincoln, as he uses his head for cleaning the toilet. It is also mentioned that he flushed Bun-Bun down the toilet.
2. However, in the world with his sister, Linka Loud, Luke is shown to be very caring and protective of her.

Trivia:

1. While Luke is an aspiring musician, his voice actor Greg Cipes is also a musician. He is a member of two bands: Cipes and the People and Super Space Fighters.
2. He is the only Loud brother to have his ears pierced, His piercing is a paperclip.
3. His Polish name is Hipolit.
4. As opposed to Luna's guitar color being purple, Luke's guitar is colored blue.
5. Rarely, in the Polish and Italian dubs, Luke is voiced by the same dubber who voices Luna.
6. His vest with shirt and belts are available in the game "The Loud House Cartoon Creator".