Mister Orderly, unlike the Mister Handy or Mister Gutsy, is dedicated to medical procedures and experimental surgery. It is not hard to distinguish it from a Mister Handy as it has a white paint job on the body, white and blue arms with a red border, and the same British butler voice of the Mister Handy series of robots.
They were not placed on the market or used by the U.S. Army, but were only delivered exclusively for the Big MT company in Big MT, specifically for their experimentation. Like the late models of the Mister Handy line, they are capable of quite eloquent speech with a stereotypical English accent. They have three pincers (like the unique Mister Handy REPCONN tour guide) of a blue color instead of the saw blade and the blowtorch of the Type-II Mister Handy. One of their pincers have a plasma gun function and another a flamethrower function.
In combat, the Mister Orderly is identical to Mister Gutsy. Their plasma gun functions roughly equivalent to a plasma pistol and use their flamethrower's function only at close range, alternating between their flamethrower and plasma gun in combat. Like the Mister Gutsy, they can't use both weapons simultaneously and will always switch to their flamer when the target is in range, allowing the player character to effectively disable an Orderly's attack capability by continuously entering and exiting the robot's flamethrower range, forcing it to switch back and forth between the plasma gun and flamer. Explosions will also knock it out of the air temporarily, giving a window of opportunity to strike the bot down.
You can also get at point-blank range and strafe around the Mister Orderly. It can't fire its weapons at all or even try to attack you in any way. The only real problem with this tactic is getting close enough to the Mister Orderly to actually do that, while avoiding its fire. When it uses its flamer weapon, dodging shots is very tricky.