The project began by exploring the relationship between an imaginary brush tool and broad nib pens. Modern typefaces are based on calligraphy, thus calligraphy tools decide the serif designs of the typeface, influencing the entire look and feel. The brief of this project was to create a typeface based on broad nib pens, nonetheless, I wanted to challenge myself with more experimental and unconventional serif designs. After spending a long time sketching and imagining the hybrid tool, Marathon Zen was developed using a hybrid pen that has characteristics of a broad nib pen with smooth and sharp brush-like endings. It consists of only 1 style, Roman, at the moment, however, I am planning to continue developing the typeface and add more styles.