there is one thing weird about lv unlockables for locusts...

on wiki it says that the grenadier in GOW 3 is unlocked from lv 39, and other locust soldiers are from first lv, thats really weird i could understand drones being from first lv but the therons ???? thats weird maybe if grenadiers are popular to be played what do u guys think? cuz grenadiers (except the elite one) are my favourite.

i have no idea why

People preferred Theron Sentinel more than Theron Guard. But in GoW 3 The two are combined. It shows just Theron Guard but sometimes they have helmets such as the Sentinels. But maybe Epic just didn't realize it and since Therons were less played as they put them as an early unlock.