@Luckywaldo - Some of those I hadn't thought of yet. I like the Sharpshooter as the Revenant. It's too bad the name Reaper is already used in the Tank lab - even if the Reaper is renamed, it would be confusing to reuse the name. Otherwise Reaper would be perfect for the Scythe.
Fiend as Zeus is another good one. Eraser as Shade is good too. I still prefer "Bogeyman" for Warrior - I always like the names to be a
bit silly. Plus having "Imp", "Demon" and "Spectre" and "Revenant" is a bit too Doom (although it's not like they own those names).
My idea
Rector => Angel (the invisible helper)
Glaive => Spook (it's just fun to say and people seem to talk about raiders the most)
Scythe => Grim (Reaper's taken, next best thing - it's invisible and carries a scythe... Grim sounds less powerful anyways for a squishy cloak-raider)
Rocko => Ghoul (good general-purpose ghostly name that doesn't imply invisibility)
Zeus => Sandman (he puts you to sleep)
Tick => Sleeper... or Omen... idunno, not much you can do here.
Warrior => Bogeyman (it's the big scary thing in the closet)
Hammer => Poltergeist (action-at-a-distance)
Sharpshooter => Nightmare (it's just scary)
Jethro => Spirit (I'm an AA unit! There's nothing else to say about me!)