Zomboss

His full name is Edgar George Zomboss, you probably would know that, because its in the Almanac of PVZ 1, his greatest creation was the Zombot, that appeared as the final Boss in PVZ 1, you need to battle him in your roof, at 5-10, when the zombot throws an Ice ball or Fire ball, Use the jalapeno on the Ice ball and use Ice-shroom on the Fire ball, maybe i just said spoilers, didnt i?