Board Thread:Plants vs. Zombies: Garden Warfare/@comment-6915501-20140302141606/@comment-24626568-20140306170226

So as it turns out, the variant that it is slowly unlocking piece by piece is specific to the character/level. Basically once you hit level 10 with the pea shooter, you would have collected all 5 pieces of the fire pea. Same thing with the Sunflower and it's Metal Petal Variant