PESTLE is an upgraded Saw Mech known as an Elite Assault Droid. When the Maelstrom struck he was immune to the disease, but an infected Jacob Mortar (Axel's father) went insane and jammed a Stromling Data chip into PESTLE's programming box. In panic, PESTLE shot Jacob and blew him to pieces. Although infected, PESTLE still fights alongside Axel in the desperate struggle against the Maelstrom.
- Mech Defence = Smash 5 Saw Mechs.
- Leak Containment = Kill Death Troopers until you find a Maelstrom Plug.
- New Weapons = Collect 50 Maelstrom Bricks from any Stromling and build a Master Cannon.