Factory foreman

The Factory Foreman is the head of the Sellbot Headquarters factory. He is a Level 9 Skelecog, and you against him and 3 other cogs in the Middle Silo. To get to him, you need to make it through the rest of the Sellbot factory, and unlock the door to the Middle Silo using the buttons located in the East and West Silos. After you defeat him, you get a piece of your Sellbot cog suit. You need 10 cog suit pieces to complete your cog suit. That means you need to defeat the Factory Foreman 10 times to complete your cog suit.