The first Mister Handy was introduced to the robotics market in 2037 by General Atomics International, as a general purpose construction and maintenance unit. Used widely on both the American and Mexican markets (especially after the Mexico City earthquake of 2042), it was a rugged, reliable design. So reliable, in fact, that it only received one major hardware update in 2039, to eliminate a bug causing interference in the operation of the multiple arms. The Calpower 238B nuclear power unit and self-maintenance modes were key to its success, ensuring each robot's longevity. To minimize maintenance overhead, each Mr. Handy was designed to perform its own nuclear fuel replacement and radiation cleansing, as well as carry out maintenance and repairs on other units (it was not possible for it to carry it out on itself).
However, as rugged and reliable as the original Mr. Handy was, it was still a design rooted in the technology of the 2030s, with a compact computer brain that was incapable of learning or executing complex tasks without extensive programming. By the 2070s, it was an automaton surrounded by more advanced designs utilizing cutting edge neural networks. In order to maintain their market share, General Atomics entered into a joint venture with RobCo Industries, combining its talent with General Atomics' experience in robotics. The resulting model was a sleek, elegant design capable of self-programming and initiative, more than making up for halving the number of arms to just three. Despite its sophistication, it was also cost-effective, making it the perfect domestic servant robot. The success of this model resulted in the development of several additional models, including dedicated medical and military versions.
Relatively uncommon, with a few notable named versions such as Andy, Godfrey and Wadsworth. They are typically equipped with a buzzsaw and a flamethrower. Before the Great War, they served mainly as a household help and 200 years later still have that designation.
The McClellan Mister Handy can be found in the townhome of the McClellan family in Georgetown. Before the Great War, this particular Mister Handy unit served as the personal assistant for the McClellan family, and will still perform various day-to-day chores for them, such as walking the dog and going grocery shopping if the player chooses to activate him.
Mabel Henderson's Mister Handy is one of the inhabitants of Vault 112 and part of the Tranquility Lane virtual reality simulation in 2277. It's a household robot who cooks, cleans and irons so Mabel doesn't have to. In Tranquility Lane it can be made to kill Mabel. It will then come after you unless you destroy it or go back to the terminal and switch safety mode on.
The following is based on Fallout 3 cut content and has not been confirmed by canon sources.
Mister Mulberry is a cut Mister Handy which was set to appear in Megaton. He was most likely a non-hostile character, but he only has two extremely generic dialog lines. Mister Mulberry can be found in Fallout 3s game files, with his reference id being 1d770.
End of information based on Fallout 3 cut content.
The McClellan Mister Handy is important and unique in that it can be controlled by a terminal in the house. Upon using the terminal, there will be five options, each allowing some form of activity with the McClellan Mister Handy:
"Deactivate Unit" - recalls the Mister Handy to its base.
"Walk Muffy""- instructs the Mister Handy to walk the family dog, Muffy. Mister Handy will travel outside, find the dog's body, then attack you. It will refer to you as the dog when it does this, apparently as a means of reconciling its shattered reality.
"Pick up Grocery Order" - directs the Mister Handy to the nearby grocery shop. However, it will just stop at the door and come back home (if it isn't destroyed en route by super mutants or other enemies).
"Read Children Bedtime Poem" - instructs the Mister Handy to go to the children's room and begin reciting a poem. Curiously, despite its rather violent reaction to the dog being dead, it does not seem to care that the children are clearly deceased; after telling the bedtime poem, he continuously repeats "Of course, of course. Don't let me keep you," until you decide to recall him.
"Home Security Mode" - sets the unit to patrol mode, searching out any enemies.
↑Mr. Handy design document: "The Mr. Handy series of robots was first brought to market in 2037 as a general construction and maintenance unit by General Atomics International. Primarily used in the United States and Mexico (where it was the leader in sales after the Mexico City quake of 2042), the Mr. Handy was a reliable robot. An early bug that caused interference in the operation of the multiple arms was fixed with a hardware update in 2039, with no major problems since then. A key selling feature is the nuclear power unit (a model 238B, licensed from Calpower) and self-maintenance modes. Multiple Mr. Handys are capable of keeping themselves in working condition and are also fully programmed to perform nuclear fuel replacements. Secondary programming handles radiation cleansing after refueling. Brain: Small brain with +3 DX booster (1 lb, .02 cf, $1,500), Complexity 3. Sensors: Basic sensors with One-Eye (.8 lbs, .02 cf, $4,000, -15 points). Communicator: Basic communicator with Disturbing Voice (.5 lbs, .01 cf, $125, 10 points). Arm Motors: Six arm motors ST20 extra-flexible (6 lbs, .12 cf, $6,000, .1 KW). Arm motors cost 60 points. Propulsion: Two 200 KW motive power ducted fans, vectored (147 lbs, 1.47 cf, $5,880) with GEV skirts. Accessories: Integral mechanic toolset (10 lbs, .2 cf, $200); Spotlight (2.5 lbs, .05 cf, $25). Power System: Routine power requirement 400.6 KW. One nuclear power unit with 200 KW output (225 lbs, 2.25 cf, $45,000, 2 year endurance). Eight rechargeable E-cells with 270,000 KWS output (20 lbs, .2 cf, $2,000). Point cost for power system is 30 points. Subassemblies: Head, two pods (“left pod” and “right pod”), six arms (“arm one” to “arm six”). Body Design: Houses nuclear power unit, rechargeable E-cells, integral mechanic toolset, and small brain. Head Design: Houses sensors, spotlight and communicator. Full rotation. Pod Design: Houses ducted fans. Arm Design: Houses arm motors and manipulators. Area: Body 16, Head 1.5, Left Pod 8, Right Pod 8, Arm 1.5 (x6), Total Surface Area 42.5. Structure: Normal structure (127.5 lbs, $4,250). Hit Points: Body 24, Head 2, Pod 12, Arm 5. Armor: Metal armor: Body DR 20, PD 4; Pod DR 20, PD 4; Arm DR 20, PD 4; Head DR 30, PD 4 (86.5 lbs, $1,730). Statistics: 907.8 lbs (.45 tonnes), 7.81 cf (3 hexes, 2.96 yards), $120,590. Body ST 12, arm ST 20 (70 points), DX 12 (20 points), IQ 6 (-30 points), HT 10/24 (70 points). Speed 6 (20 points). Legality 4. Point cost: 235 points."
↑Museum of Technology terminals; Museum Information, Robotics Exhibits: "The Museum of Technology is proud to be the home of some of the original prototypes in the Mr. Handy, Mr. Gutsy and Protectron robotics lines. See the development of these metallic assistants and how they've made our lives easier. Play our Artificial Intelligence game where you will program a robot and watch it obey your commands in real time! After seeing what makes them tick, you'll never look at your robot the same way again. Exhibit sponsored by RobCo and General Atomics International."
↑Tour guide: "Ready for the REPCONN tour, Rocketeers? Courtesy of the fine folks at RobCo, I'll be your guide today on the path of... Scientific. Discovery. In the lead-lined case behind me is a spent radioactive rod from of our old reactors. No need to stand too close, let's move along, shall we? Look here - a row of multi-colored plasma fuels! Careful, they may look safe to drink, but your stomach is the last place they should be. Why the difference in cylinder size? Refining our production methods has resulted in higher yields of fuel over time, that's why! To my right you can see a sample of some old "safety barrels" REPCONN once used to store radioactive waste. Perfectly safe. On my left is an example of a mountain of REPCONN safety barrels some legislators claim are poisoning our environment. Ridiculous. Behind me is our most recent rocket project, which we're keeping under our hats... until "launch," if you'll pardon the expression. And in front of me is a model - not actual size - of the launch dome we are using to send our rockets screeeeaming into orbit. Now these colorful fellows behind me are REPCONN's earliest... experiments in flight. Feel free to read the plaques and learn, Rocketeers! Now for the highlight of our tour! Due to a generous donation from RobCo, this next exhibit showcases the wondrous world of - robots! Around you are the incredible Eyebot, the fearsome Sentry Bot, and the always-helpful Mr. Handy. That helpfulness runs through our whole line!This is the final stop on our tour. This model of our solar system is a small example of where the partnership between RobCo and REPCONN hopes to go.See those little rockets zipping about? They are manned by robots, tirelessly looking for resources to mine on planets beyond our own.And that's it for our tour today, Rocketeers - RobCo and its tiny partner REPCONN thank you! Any further questions, please, feel free to ask." (Tour guide's dialogue)
↑REPCONN headquarters placard: "The 'Hand' in Handy You never can have too many hands - three, why not four? That was RobCo's inspiration behind the popular (and cost-effective) Mr. Handy model, the first of the line shown here. Always a help around the household, whether with Mom in the kitchen using its titanium circular power saw or in the garage with Dad using its armor-piercing laser array, Mr. Handy is not just helpful... he's your friend, too. Exhibit Brought to You By Your Friends at RobCo."
↑Fallout 4 loading screen hints: "Created by General Atomics International as a domestic servant robot, Mister Handy is equipped with tools that can be used as weapons, if the need arises."
↑Fallout 76 loading screen hints: "The pride of General Atomics International, the Mister Handy was designed as the ultimate domestic servant. If needed, however, his various attachments can be used for defense."
↑Variants in Fallout 3, Fallout: New Vegas, and Fallout 4.