Mona Hattoshin is a well-known character originating from 2channel, a popular Japanese internet forum. Mona is an ASCII art cat with a simple, round face and distinctive expression, often used in memes and internet culture. The 'Hattoshin' (八頭身) version specifically refers to a variant with an exaggeratedly tall and slender body, parodying the proportions of a 'model-like' figure. Mona Hattoshin is an iconic figure, symbolizing the creativity and humor of the 2channel community.