[@RaijinSlayer] I'd add as a weakness to Alex that his drones need the required materials to create things stored inside of them. Since they're small, they can perhaps go back to the queen to refill. That would make sense logically. Perhaps to balance him you could drop or nerf another weakness, as adding a material restriction would probably under-power him some. 


EDIT: To clarify, he's definitely well-balanced. I'm just thinking about how the drones would work logically.