The Tsuno-Tsuno is a type of Badnik that appears in Sonic Chaos on the Sega Master System and Game Gear. Unlike most Badniks, it is not clear what, if anything, this model is based on. It has a rounded body with a large, sharp-pointed wedge on its top. It has a pair of short, clawed limbs and moves about on a pair of wheels.

Encountered in the Sleeping Egg Zone, the Tsuno-Tsuno can be seen moving about slowly from side-to-side on whatever terrain its on. Due to the beak-like extension on its head, the player will take damage if attempting to Spin Jump on top of it. It is vulnerable to attacks from the front and rear, so the Rolling Attack and Spin Dash are recommended for defeating this Badnik.

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