From Inkipedia, the Splatoon wiki
Ink wheels are a mechanic in Return of the Mammalians.
Ink wheels roll and create narrow trails of ink when hit, somewhat similarly to Rolonium. Some can only be used once, others stop at certain points while rolling and must be hit again to resume rolling, and yet others are regenerated indefinitely by machines after being used. Unlike Rolonium, ink wheels do not fly into the air, instead following a set path along the ground and sometimes up or down walls. They explode on contact with certain things, such as enemy Octarians.
Return of the Mammalians
|0101 Get to Know Alterna, Your Only Choice||✓|
|0107 The Ink-Conservation Project||✓||✓|
|0108 Switching Things Up||✓|
|0103 Ink Wheels - Experience Tomorrow's Technology Today!||✓||✓|
|0109 Dive and Dash||✓|
|Rocket 01 Alterna Space Center: Entrance||✓|
|Rocket 04 The Spirit Lifter: Steerage||✓|
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Smallfry pushing an ink wheel
An ink wheel crashing and exploding
Two ink wheels in Landfill Dreamland
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