Ok here is some things I thought oF venipede and its evolutions:
Venipede , the larvae of the line, sporting deadly poison on their fangs at the ready to kill prey, hints that the offspring is pretty much independent from birth and need no actual care from the parents once they have come out from their eggs. And most probably, a lot of them spawn at once, so most probably they wil be considered pests.
I really wonder how Whirlpede eats. Could it be an oddly shaped coccoon that is able to roll about? The energy it uses to ram at attackers must come from somewhere, but so I read, they keep still most of the time in the wild. Maybe their energy is limited and those Whirlpede who have little to no energies left will be easy prey,as they will be too tired to fight back. This could also explain why Scolipede is rarely seen in the wild.
And, Am I the only one who thinks Scolipede would make an awesome mount? Considering almost every Pokémon in existance can be domesticated, It's not hard to imagine a fierce group of warriors in the past who raised and used Scolipede as cavalry. As Scolipede is bulky, fast and most importantly, ferocious. (Screw your Ursaring cavalry
As the history of Unova is pretty vague at the moment, maybe this tribe, after conquering most of Unova with their army of angry centipedes, attempted to conquer the city where Relic Castle now stands but were completely wiped out by an army of Sigilyphs, who then proceeded to wipe them out from history as well.
Looking forward for the gratuitiously violent "Hazards" section of this particular Pokémon.