powder keg runners?

[Midhav]

kegs might appear after after we're done with invasions, in the forests if they're redesigned. or maybe even in new islands

[Basil Dreadflint]

I believe that Powder Keg Runners are strictly for invasions. Their purpose is to carry the keg as close to the barricade as possible, and blow it up. Nowhere else on the islands are these enemies needed.