Board Thread:Plants vs. Zombies Wiki discussion/@comment-26239911-20160514132132/@comment-4024597-20160515140847

Modern Mechasaur was hell for me until I found a solution: Place  on 4th lane, 6th column, then spam PF on it when 2nd stage begins. You should defeat Zombot in less than 2 minutes.

Thus, the only ones that are still hard for me are Multistage and Original.

But if we are counting ALL types of Zombot, I'd say this one.