Hollow Other Bydo 4 is a very bold, normal width, high contrast, upright, normal x-height font visually similar to 'FF DIN Round' by FontFont, 'Menco' by Kvant, 'Sebino Soft' by Nine Font, and 'Core Sans DS' and 'Core Sans ES' by S-Core (names referenced only for comparison).
Keywords: posters, headlines, packaging, stickers, children’s media, playful, retro, cartoon, chunky, quirky, novelty display, retro flavor, playful texture, bold impact, rounded, soft terminals, inlaid holes, bubbly, friendly.
A heavy, rounded display sans with soft, blunted terminals and broadly inflated bowls. Strokes are thick and smooth, with occasional tapered joins that give letters like K, R, and S a slightly hand-cut feel. Many glyphs include small irregular inlaid cutouts and pinhole-like counters that read as intentional knockouts rather than conventional inner spaces, creating a textured, “punched” surface across the set. Overall proportions are compact and sturdy, with generous curves, minimal sharp angles, and a consistent, poster-ready silhouette.
Best suited to display use such as posters, headlines, brand marks, packaging, and playful merchandising where the bold silhouette and decorative cutouts can be appreciated. It also works well for short blurbs, labels, and social graphics that benefit from a friendly, cartoonish emphasis.
The inlaid cutouts and bouncy curves give the type a whimsical, toy-like tone that feels upbeat and informal. It suggests mid-century novelty signage and comic title lettering—cheerful, attention-seeking, and slightly mischievous rather than refined or corporate.
The design appears intended to deliver maximum impact through a chunky rounded structure while adding personality via irregular internal knockouts. Those cutouts function as a signature texture, turning simple geometric forms into a distinctive novelty display voice.
Counters tend to be small relative to the stroke mass, so the face reads best when it has room to breathe; tight spacing or very small sizes may cause the internal details to visually fill in. Numerals and caps share the same inflated geometry, producing a cohesive, stamp-like rhythm in headings.