Monika (モニカ) is a main character and the poster girl of Doki Doki Literature Club!. She is the President and Founding Member of the Literature Club. As the game's driving force, she directs club members to write poems until the club festival, which enables and develops the characters and story.

Monika is a fair-skinned 18-year-old[1] adolescent young woman—as described through the eyes of the Protagonist through her introduction, as "beautiful" and "athletic", suggesting she's generally physically fit and well-proportioned compared to the other girls. Her physique is portrayed to be of average stature, being the second/third tallest member of the Literature club right behind Yuri or the Protagonist, with a slender build and an ample bust.

Monika has extremely long, glistening coral-brown[3] hair that is perpetually tied up into a high-hoisted ponytail which extends way past her navel that curls up at the ends, kept fastened by a large white ribbon. Her fringe ends at eyebrow height and her face is framed between two chest-length forelocks. Her eyes are calm and sparkly, colored emerald-green.

In terms of attire, Monika wears the standard-issue school uniform consisting of a collared white top layered under a knitted mocha-brown sweater vest and fully buttoned periwinkle-gray blazer. Followed along with a pleated blue skirt, long sleek pantyhose thigh-high stockings, and white uwabaki slippers with pastel-pink fronts. At the center of her collar, she has a thin red string wrapped around it, shaped like a bow tie.