The cog is in the sewer line near Sludge Street in Monstro City.
under the snow
it is one of the snow glumps use gabys lasar to find it
under the lump of snow closest to the thing your trying to activate
Under the snow
you have to click on gabby then go on the app Gabby's Laser
The lump of snow closest to the start of the woods.
click on a lump of snow then click gabby then use laser app and press lump again an another one again ect.
A cog is wheel or bar with a series of projections on its edge that transfers motion by engaging with projections on another wheel or bar. So a cog looks like a circle with square shaped points around the edge.
If you mean on the ship, you need to send whirly up the tube and he will come out on the other side of the cage.well u have to click the pipe then click wurly and he goes through .Then click the silver cog on the floor.open ur bag and drag the cog to the brown cog on the muchine.After that click on thegold switch in the top corner next too the door.well then u click on the top brown cog and u have to get stuff inline with others then u click open or somthing and it opens
castel of gem
Rookie has it. He is in the Town (I think).
You have to do a certain mission to unlock the head, then you beat the cog bosses which are like lvl 60 so you should bring lots of friends, but only sometimes do you unlock the parts of the body of the cog.