This is a list of characters from the TNT television series Falling Skies.
Originally thought to be the alien species responsible for invading Earth, the Skitters are a race under the control by the Overlords. Their home-world was subjugated by the Overlords and the Skitters were harnessed just like the children of Earth. Some Skitters have been able to overcome their controllers and plot rebellions against the Overlords.
Bipedal robotic drones that fight alongside the Skitters. Destroyed Mechs are entirely mechanical inside, so there is no "pilot", implying they are unmanned drones. Ones who control mechs can put them into guard/patrol mode, give special orders violating their usual protocol and assign priority targets. These commands are followed even if the commander is dead implying that they have primitive A.I. that allows them to some extent think on their own. It seems that harnessed children can also order Mechs such as when Karen Nadler ordered a Mech to execute Boon (This implies harnessed children have a military rank system). The Mechs, along with all other Espheni mechanized servants are disabled when Alexis Glass-Mason sacrifices herself to destroy the Espheni power core.
Mechs produce a distinct mechanical moan every-now-and-then for reasons unknown.
Are parasitic creatures which allow other races to completely control the wearer. It was not known that these were their own creature (and not just a piece of bio-mechanical equipment) until season 2. Their real names are chemlocks according to Red Eye, the leader of the Skitter Rebellion. In Season 4 a new type of harness is featured, used to mutate human adults into humanoid skitters. The Harnesses are permanently disabled when Alexis Glass-Mason destroys the Espheni power core along with all other Espheni technology. Though de-Harnessed, Ben Mason still retains the spikes from the Harness and the enhanced abilities granted by it. It also allows him to communicate with the Espheni and Skitters and use the Espehni Shadow Plane device.
The force behind the invasion of Earth. The Espheni were introduced late in season 1. They have a very large intellectual capacity, able to control many harnessed individuals at once using merely their mind. In the Season 2 finale their actual name was introduced: "Espheni". The Espheni are wiped out in the series finale by Tom Mason with a Dornia bioweapon. In season 4, the Scorched Overlord reveals that part of the Espheni motivation is that they are running from their Great Enemy, the Dornia and are conquering worlds to fuel their war machine. They serve a Queen who states that the second reason for their attack is revenge for the death of her daughter during a failed invasion 1,500 years before the one in the series.