User blog comment:Darkcloud1111/''The Mark of Athena'' Plot Holes/@comment-4521561-20121015194512/@comment-3146930-20121015214632

Then who were they the bane of before? These two are weird as the seem to have some traits of the Gigantes and some that aren't. For example, they don't have the dragon legs like the other Gigantes, having snake feet instead. They also seem to have been around longer than any of the other Gigantes, including Alcyoneus who was supposed to be the first. However, like the other Gigantes they need a demigod and god to kill them. Just a thought, but why didn't these two move with Western Civilization like all the other Gigantes, who seem to all have been awoken in America?