I don't think you did though, especially not up to A.3. As Chad's whole purpose is to provide the excuse to go from Serums → Super Serums → Permanent Growth Machines → Hyper Growth Machines → etc., given he serves as a rival to the lab's scientific growth. With everything else being comedy with him.
Also, what's with the whole using your alt accounts to downvote– upvote? Don't you think that's kinda childish?