From Sonic Retro
|Game: Sonic Chaos|
|Affiliation: Eggman Empire|
|Hits to defeat: 1|
Quite what these weird, vaguely onion-shaped machines are supposed to be isn't known, but Tsuno-tsuno models have no proactive offense; they simply drive inexorably forward, jumping occasionally and damaging Sonic or Tails if they bump into them. Tsuno-tsunos are easily dispatched by a Spin Attack.
Like other robots in 8-bit Sonic games, no animal friends pop out of Tsuno-tsunos when they are destroyed. Whether these Badniks canonically don't contain organic batteries, or the escaping critters simply weren't shown due to programming limitations, is not known.