A Drone is meant for utility: Building resin and using acid to dissolve weapons or walls so your sisters can continue forward. You are to stay at the Main Hive most of the time, as you are not (read: NOT) a combat alien. You should keep a eye on the hosts, but let the sentinels guard the hosts, It's what they are meant for. Spreading weeds, building resin structures and helping the Queen is your job. These are the basic Aliens that spawn at round start, one of the starting drones will evolve into a Queen and command the Hive. As a Starting drone you should be spreading weeds in the hallways and constructing the Hive. You should also be infecting the monkeys on board. (See:Monkey Diagram) As there are almost always ghosts waiting for a monkey to burst. Drones are tasked with building the Hive up. And vent crawling to Areas that need to be covered with weeds so the other troops can move forward and heal. Weeds are the life-force of the Aliens. If you don't plant any you will lose.