Monika is (or was) the leader of the Literature Club. The other characters describe Monika as intelligent, confident, and athletic. She is not as talkative as the other girls, but it is hinted that this is not by choice. Monika is also known to be highly popular, which makes the protagonist admire her. She is always depicted as mature and hardworking, with a serene, compassionate expression on her face.

In the original series, she could have been dubbed as the "mother of the house," she was also in a relationship with a professional wrestler known as "Woken Matt Hardy," though this relationship is mainly due to their shared interest in deletion. This latter part will not be returning in the reboot.