Super Robot's limbs extend, armor appears, Death Rays will sprout up from nowhere, hatches will open up in various parts of their bodies to reveal missiles (beware the missile codpiece and bustier!) and they become ten metric tons heavier than before. The cooler sequences will qualify as Technology Porn. See also Transforming Mecha, Hyperspace Mallet, Swiss Army Weapon, Impossibly Compact Folding, Retractable Weapon, and Shapeshifter Baggage. Can lead to a Macross Missile Massacre. Human-sized robots with this power are usually Super-Powered Robot Meter Maids and/or Do Anything Robots.
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- Mazinger Z: Mazinger-Z has two extendable, razor-sharp axe blades (properly named Iron Cutter) embedded into its forearms, several drilling missiles stuck into its upper arms, and its belly has a hatch to launch MORE missiles from. And then you have his Mid-Season Upgrade Jet Pack, the Jet Scrander, which can shoot shurikens from the wings. New Mazinger (a one-shot story set on an alternative universe) went deeper in this trope, and in one scene, many hatches opened up all over its body, revealing dozens of missiles underneath.
- Great Mazinger: Great Mazinger stores one sword in each shin, several cutting blades along its legs, and the buckle-like glass adorning its midsection is a hatch that opens up to launch a missile from. Oh, and two wings and a Jet Pack can unfold from its back.
- UFO Robo Grendizer: Grendizer has one scythe stored in each shoulder that can be joined to form a twin-ended weapon called the "Double Harken". The blades could also fly away as PrecisionGuidedBoomerangs. And that's still discounting all the weapons hid in its flying device.
- Mazinkaiser: Mazinkaiser has THREE blades hidden in its body (two of them in its shoulders and the bigger one in its chest), and its midsection stores seemingly endless numbers of giant missiles (In Mazinkaiser's Super Robot Wars appearances, The ammo counter for this attack was, at least once, set to 99).
- Combattler V: The Humongous Mecha and the individual vehicles had more weapons than any other Humongous Mecha. Its arms alone could store its fists, a three-pointed dagger to make its ramming move easier, an assortment of sharp projectiles, a blow-torch, a clamp...
- To drive the point home, Combattler's attack list in Super Robot Wars Alpha was three pages long (most units barely fill one).
- Voltes V: Its belt was in reality two whips, its midsection stored a couple of spinning tops, the ornament on its chest hid his sword's blade...
- Daimos: The ornament on his chest were in reality two daggers, and they covered a hatch that opened up to reveal its Chest Blaster. Its feet were armed with retractable spikes...
- Gundam 0080 has a puzzling example of this near the end of the series, where the Gundam NT-1's forearm-plate opens up to expose a set of minigun barrels that, themselves, could not fit in the forearm. It turns out that there are diagrams◊ to explain the arm gun's operation...with still no explanation of how those long, protruding barrels fit under smaller, backward-sloping armor covers, but it at least explains how it carries ammunition, since the entire forearm's main support structure is...the ammo drum itself.
- Turn A Gundam: Turn A Gundam can similarly fit tons of weapons and other junk inside of it. Unlike most examples, this is justified, however, as the Turn A is almost completely hollow. It has virtually no internal mechanisms, using special I-field generators to move around. According to design notes, the Turn A actually has the power to teleport equipment from specialized arsenal bases into the multipurpose silos in its chest.
- Mobile Suit Gundam Wing: The Shenlong Gundam and its Mid-Season Upgrade Altron Gundam can turn their arms into dragon's head-shaped claws, which are shown extending well beyond the length the arm segments would suggest. The Endless Waltz version of Altron has even longer range, but also a potential justification since the fangs are mounted on red, accordion-like segments which seem capable of telescoping or hiding within each other for storage space.
- Tengen Toppa Gurren Lagann:
- Gurren Lagann! Giga Drill Breaker! They actually give it a Hand Wave in the that they're using "Spiral Energy", which is explicitly able to create matter out of nothing. Which is also something of a deconstruction, as overuse of this will eventually result in "Spiral Nemesis", which will create so much energy and mass as to make the entire universe implode.
- Played straight with Viral and Kamina's second fight, wherein Viral responds to the Gurren-Lagann's boost of power by turning his Ganmen's face into guns.
- In Genesis of Aquarion, the titular robot has an attack called the Infinite Punch, which causes Aquarion's arm to open up and another arm to extend out of it. Now imagine that new arm opening up and extending out its own. Repeat the process until Aquarion is able to stand 10 miles away from the enemy, throw a punch, then have that chain-punch extend to the point that it smashes the enemy into the moon.
- Getter Robo: The three forms of each Getter tend to look very little like their component parts as well as nothing like each other, then there's the issue of all its weapons. Hand-waved by the use of Getter Rays which, in an idea later recycled by Tengen Toppa Gurren Lagann, will cause the universe to collapse if overused. The use of advanced nanotechnology is also shown, if Getter-1's transformation sequence from the OVA is to be believed.
- Nanomachines are an OVA-only explanation, the manga chalks it up to Getter Rays. That's also why Getter Go has no hidden weapons or illogical combinations — it runs on plasma.
- Many of the megadei in The Big O (including the title robot) can do this.
- Mahou Sensei Negima!: Both the anime and the manga versions of Chachamaru. Although she's primarily a quiet girl, at times she reveals anything from gatling guns to massive swords. These weapons can be as big as she is, at times. She is a magical robot, though.
- The first in anime was the "Synchron System" in the J9 Trilogy (Braiger, Baxinger, and Sasuraiger), which enabled ordinary-sized cars and motorcycles to change into hundred-ton mecha.
- Much like Gurren Lagann, the mechanism behind this actually becomes a major plot point, as it also figures in a scheme to increase Jupiter's mass to the point where it could become a second sun.
- In the Marvel Universe, Machine Man is an android who is best known for his telescoping limbs in addition to other functions. He is full of useful devices!
- Also from Marvel, the villain Stilt-Man wears a suit of robotic armor with extending legs. And this is his only super power. The second Scourge had telescoping legs in his bag of second-hand villain tricks, presumably based on Stilt-Man's design. The depowered mutant Tattoo showed up in the post-Civil War New Warriors team using Powered Armor with extendable arms and legs, although she fared even worse than old Stilty, dying in one of the team's first battles. At least she didn't take an anti-tank missile to the nuts.
- Yet another Marvel example: M-11, from Agents of Atlas, a robot who's equipped with telescopic limbs, a Death Ray, and Electro-Hands, among other things.
- Finally, in Excalibur, Karima Shapandar looked like an ordinary human until she deployed her endless array of instruments of destruction. She got a redesign upon her move to X-Men, though, sadly.
- Robotboy's Super Mode. When activated, asskicking ensues.
- The Iron Giant when in war mode.
- He at least has the space for most of it.
- R2-D2 from Star Wars. Every hatch, detail, bolt and panel opens up and has an improbable number of really nifty devices behind them.
- The Expanded Universe later justified it by saying that the R2-series of droids are designed to be highly modular. So presumably a lot of his tools get switched out or replaced offscreen or between movies.
Live Action TV
- Small Wonder: VICI. Once she even began malfunctioning after extending her neck too much and getting a thingamajig disconnected
- Masters of the Universe featured several such characters, usually cyborgs rather than robots. While the toys obviously kept the telescoping to the realm of physical possibility, their depictions in comics and cartoons frequently threw reason out the window.
- KOS-MOS from Xenosaga. A mild subversion. While KOS-MOS does have a tendency to pull weapons out of "thin air" she actually justifies it for them. Her Knife and Gun are pre-equipped in compartments (she IS a robot and thus is not physically limited by the flesh rule) and her R-blade/Drill/Cannon are morphed from existing body parts. Her REALLY flashy weapons though are explained that she calls them through the U.M.N. and thus is essentially warping new weapons in from another place (not actually carrying them on her person) much in the same way as characters summon A.G.W.S. and E.S. units.
- The Clumsy Robot from EarthBound is a cute little thing that would probably come up to your knee, and also contains enough ordnance to level a city block. And still has enough room for some sandwiches.
- In James Pond 2: Codename Robocod, Robocod can extend his midsection to grab onto ceilings and high platforms.
- Persona 4 Arena: Robot Girl Aigis can pull chainguns, missle launchers, anti-air cannons, jetpacks and more out of her back.
- In Team Fortress 2, Some of The Engineer's constructs, most notably the sentry gun, have this happen, mainly when being upgraded.
- In Space Engineers, concealing weapons underneath ship armor is very popular. On the other hand, the ship actually needs the internal space to fit the weapons and the mechanism to deploy them. It's also liable to end in disaster if the pistons or rotors jam, which can cause rockets to misfire straight into the delicate internals of the ships. The trailer for the Xbox One port has a space station with turrets that rise out from hidden ports.
- Soundwave in The Transformers could go from a tape player to a 5 story robot, where does the extra mass come from, where does it go? Who can know!
- This is indicative of Transformers in general. For instance, the original Megatron turns into a pistol which is then used by Starscream.
- Or more absurdly, by a human!
- In Transformers Animated, Longarm earns his name by being able to extend his arms to great length (legs as well.) This is only a small part of his shapeshifting abilities, which let him change his robot mode almost entirely, to hide the fact that he's actually Shockwave, Megatron's eyes and ears on Cybertron.
- Swindle and Sari after her upgrade display the more standard variant of massive amounts of weaponry folding out of their bodies.
- Transformers actually justifies it, if never explicitly in the shows. They all have a personal pocket dimension that holds the extra mass when they're not using it.
- Including guns, optional hand attachments, all the various cassettes Soundwave and Blaster store in their chests, and Optimus Prime's trailer (before becoming a Powermaster)
- My Life as a Teenage Robot.
- Ironically, despite appearing in the picture at the top of this page, Jenny could count as a subversion. In one episode she continually upgrades herself, but at the same time adds a lot of mass.
- Another time, it's played straight - she can telescope to ridiculous proportions but can't "retract" (if that's the right word) without some hardware work.
- Bender in Futurama seems to have whatever abilities the plot needs, including arms that extend well beyond the plausible.
- Also in Futurama, the Masked Unit could do this: his day-to-day form is an unassuming robot, until Bender starts to insult him and he telescopes into his pro-wrestler form.
- Inspector Gadget, while technically a cyborg, has telescoping arms and legs, as well as various tools that extend of all parts of his body.
- The Robonic Stooges had The Three Stooges as cyborg/robot/android secret agents with telescoping limbs and other built-in gadgets.
- Invader Zim:
- GIR of will occasionally deploy a plethora of weapons from his head.
- Zim's PAK (kept on his back) also contain an array of devices as needed, mainly his telescoping spider legs. note
- Super Robot Monkey Team Hyperforce Go! loves this trope. Not only the Super Robot himself has it but also the monkeys, all able to transform their small hands into much larger weapons.
- Robotboy: The main character goes from doll-sized to adult human-sized regularly and has a small army's worth of weapons.
- Bobert from The Amazing World of Gumball can go from just a little shorter than Gumball, to a massive freaking, gun-covered battle form when he gets pissed.
- Frequently played straight and parodied (as everything else on the show) in Megas XLR.