Shade Troopers are one of the main components of Lord Brevon's army, a creature with a single shade encased in a mechanical battle suit and armed with an energy rifle. They first appear in the opening cutscene attacking the Soldiers of Shuigang as well as several cutscenes afterwards, and later appear in Jade Creek where they are deployed by Serpentine's Robogunship. In addition to being regular enemies, they are also one of the mini-bosses of Thermal Base, alongside Roboshrimp & Keymaster Squid. They teleport in on teleport pads as the player character comes within a certain distance. Shade Troopers also appear in Battle Glacier and all four rounds of Final Dreadnought.
The Shade Trooper attacks every few seconds by crouching and firing a long four-shot burst from its rifle, which can be blocked and deflected by Milla's shield. Shade Troopers will follow the player as far as they can reach until transitioning to the next area. If Shade Troopers take a certain amount of damage, they will fall over and cannot be damaged between falling and standing back up, but will die once they take the same amount of damage again. When playing Jade Creek as Carol, any Shade Trooper she defeats will drop Gas Cans so that she can use her Bike Spin attack on the Robogunship.
In Thermal Base, there is a unique Shade Trooper encountered after jumping down a hole. It will try to push the player into a lava stream by using a wall. The player must attack the wall to knock back the Shade Trooper, who will activate a bomb when pushed back enough, destroying it. After this, the wall turns into Crystal Shards and the player can progress.
- Due to the Shade Trooper and the Shade Core (by extension the Shade Beast) both having "shade" in their names, they may be related.