How can you change which Cog you are in the VP

If you defeat the Sellbot VP at least 4 times, then you upgrade to a new cog suit. I.E. you start with a Cold Caller suit, then when you defeat the VP 4 times again, you get the Telemarketer suit. Another 4 times, you get the Name Dropper suit, then 4 times again, you get Glad Hander. 4 times again, Mover & Shaker, 4x again, Two-Face (not to be confused with Double Talker of the Lawbot suit), 4x again, Mingler, 4x again and you got the final suit, Mr. Hollywood. With the Mr. Hollywood suit, you can go all the way up to a level 50. When you reach level 50, you can still go back and fight the VP any number of times you want.

This same concept applies to defeating the Cashbot CFO, the Lawbot Cheif Justice (CJ), and the Bossbot CEO, just different cog suits.