The robot emoji is Robot, U+1F916. It leads a list of 60: the five emoji CLDR files under robot, mechanical or machine, the nine others it calls monster, 20 parts and makers, 13 text robots and 13 combos.
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Skin tones: the makers, not the robot
Robot has no skin tones and no plain text form. Six items follow the skin tone you pick under More options: the four people in the makers group and the combos Doing the robot and Built it myself.
Where the word comes from
Robot is a Czech word. Wikipedia and Wiktionary agree that it reached the public in 1920 through Karel Δapek's play R.U.R., and that Δapek credited his brother Josef with it. The root is robota, which Wiktionary glosses as serfdom, corvee and any arduous work.
Tips
Alien monster is the robot's nearest relative on paper: Unicode's names list cross-references the two. Arcade rivals sets them side by side.
does not compute is plain ASCII. Wiktionary calls it a phrase uttered by robots in science fiction and a joke for that makes no sense.
Low battery and Troll are the newest emoji here, from Emoji 14.0; an older device shows an empty box. Robot itself dates from Emoji 1.0.
Questions and answers
What does the robot emoji mean?
Unicode does not say. CLDR, the Unicode project's list of search words, gives only face, monster and robot. Wiktionary's senses cover the rest: a mechanical being from science fiction, a machine built for a task, software, and a person who seems to have no emotions.
Is there a robot arm emoji?
In effect. Mechanical arm, U+1F9BE, and Mechanical leg, U+1F9BF, date from Emoji 12.0 and are the only emoji CLDR files under mechanical. Its other words for both are accessibility and prosthetic, never robot. Neither takes a skin tone.
Is there an android or cyborg emoji?
No. CLDR files no emoji under android, cyborg or bot. The first group is built from the three words it does have: robot, which Robot has alone, mechanical, and machine, which only Slot machine and Fax machine have.
Robot, and what else CLDR calls mechanical or a machine 5
π Fax machineU+1F4E0. The other emoji CLDR files under machine. Its whole list is communication, fax and machine. Emoji 0.6.
π¦ΎMechanical armU+1F9BE. One of two emoji CLDR files under mechanical. Its other words are accessibility, arm and prosthetic, and none of them is about robots. It takes no skin tones. Emoji 12.0.
π¦ΏMechanical legU+1F9BF. The other emoji CLDR files under mechanical, with accessibility, leg and prosthetic. Emoji 12.0.
π€RobotU+1F916. Formally Robot face. CLDR gives it three words, face, monster and robot, and gives robot to nothing else. It has no skin tones and no plain text form. Emoji 1.0.
π°Slot machineU+1F3B0. One of two emoji CLDR files under machine. The rest of its words are casino, gamble and slots. Emoji 0.6.
Show all 60 robot emoji and text robots (55 more)
Monster, by CLDR's word: the other nine 9
π½AlienU+1F47D. Monster by CLDR's word, with extraterrestrial, space and ufo. Emoji 0.6.
πΎAlien monsterU+1F47E. Unicode's names list cross-references it with Robot face, each pointing at the other. It is the only emoji CLDR files under pixelated, and the only one under gamer. Emoji 0.6.
πSkullU+1F480. CLDR lists monster next to dead, death, lmao and yolo. Emoji 0.6.
β οΈSkull and crossbonesU+2620 U+FE0F. CLDR lists monster, bone, crossbones and death. It has a plain text form. Emoji 1.0.
π§TrollU+1F9CC. The newest of the ten. CLDR lists monster, fantasy and trolling. Emoji 14.0.
Parts and power 10
πBatteryU+1F50B. CLDR gives it one word, battery, and Unicode cross-references it with Low battery. Emoji 0.6.
πElectric plugU+1F50C. The only emoji CLDR files under plug, with electric and electricity. Emoji 0.6.
βοΈGearU+2699 U+FE0F. Unicode glosses it as technology, tools. It is the only emoji CLDR files under cog or cogwheel, and it has a plain text form. Emoji 1.0.
β‘High voltageU+26A1. The only emoji CLDR files under zap. It lists electricity, danger and thunderbolt too, and has a plain text form. Emoji 0.6.
πͺ«Low batteryU+1FAAB. The only emoji CLDR files under drained, and the only one under electronic. It also lists energy and power. Emoji 14.0.
π§²MagnetU+1F9F2. CLDR lists attraction, magnetic, positive and negative, and horseshoe for the shape. Emoji 11.0.
πͺScrewdriverU+1FA9B. The only emoji CLDR files under screw, next to flathead and handy. Emoji 13.0.
π§°ToolboxU+1F9F0. CLDR lists mechanic, chest and red. Emoji 11.0.
π§WrenchU+1F527. CLDR lists spanner as well, the British word for it. Emoji 0.6.
Who builds it, and what it plugs into 10
ποΈControl knobsU+1F39B U+FE0F. Unicode glosses it as audio control, and CLDR files it under music, but the panel passes for a robot's chest. Emoji 0.7.
π₯οΈDesktop computerU+1F5A5 U+FE0F. Unicode glosses it as tower computer. CLDR lists computer, desktop and monitor. Emoji 0.7.
πFactoryU+1F3ED. CLDR gives it two words, building and factory. It has a plain text form. Emoji 0.6.
π§βπFactory workerU+1F9D1 U+200D U+1F3ED. CLDR lists assembly and industrial, and gives those two words to the factory workers alone. Emoji 12.1.
πΎFloppy diskU+1F4BE. CLDR lists computer, disk and floppy. Emoji 0.6.
πΉοΈJoystickU+1F579 U+FE0F. For the remote-controlled kind. CLDR lists game, video and videogame. Emoji 0.7.
π»LaptopU+1F4BB. Formally Personal computer. CLDR lists computer, pc and office. Emoji 0.6.
π§βπ¬ScientistU+1F9D1 U+200D U+1F52C. The three scientist emoji are the only ones CLDR files under engineer. It also lists chemist, physicist and mathematician. Emoji 12.1.
π§βπ»TechnologistU+1F9D1 U+200D U+1F4BB. CLDR lists inventor, coder, developer and software. It takes five skin tones. Emoji 12.1.
Robots in plain text 13
[¬º-°]¬A robot with its arm out, built from the not sign, the masculine ordinal and the degree sign
Κα΄Κα΄α΄robot in small capitals
β»Power symbol, U+23FB, a plain character that Unicode notes as the IEC 5009 standby symbol
βΎPower sleep symbol, U+23FE, for a robot that is resting
γγγγJapanese for a robot, borrowed from English. The katakana letters are ro, bo, small tu and to
ππππ ππππbeep boop in mathematical monospace, the typewriter alphabet
π πΎπ±πΎπ ROBOT in squared capital letters
01110010 01101111 01100010 01101111 01110100The word robot in binary, one 8-bit byte per letter
d[o_0]bA square-headed robot with an ear on each side and one eye wide, in plain ASCII
does not computeA phrase commonly uttered by robots in science fiction, by Wiktionary's account, and now a joke for that makes no sense
robotaThe Czech word behind robot. Wiktionary gives it as serfdom, corvee and any arduous work
Robot combos 13
π€πΎArcade rivalsRobot, then alien monster. The pair that Unicode's names list cross-references.
π€πBeep boopRobot, then speaker high volume. Robot noises, at full volume.
π§βπ»π€Built it myselfTechnologist, then robot. CLDR files Technologist under inventor. The person follows the skin tone.
π€π¬ChatbotRobot, then speech balloon. Bot is a clipping of robot, by Wiktionary's etymology, and in computing it means software that performs a task.
πΊπ€Doing the robotMan dancing, then robot. Wiktionary has the robot as a disco dance that imitates stiff android movements. The dancer follows the skin tone.
π€βLogic errorRobot, then red question mark. The emoji version of does not compute.
π«π€Not a robotProhibited, then robot. What the tick box asks you to confirm.
π€πOn chargeRobot, then electric plug. Plugged in for the night.
π€πͺ«One percent leftRobot, then low battery. Low battery dates from Emoji 14.0, so a device from before it shows a box after the robot.
π€π€π€Robot uprisingRobot 3 times. Three in a row, for the day the machines take over.
π€π§ΉRobot vacuumRobot, then broom. Wiktionary's example sentence for robot is one in the house that does the vacuuming.
π€π€Sleep modeRobot, then ZZZ. Powered down until morning.
π¦Ύπ€π¦ΏSome assembly requiredMechanical arm, then robot, then mechanical leg. The three emoji CLDR files under robot or mechanical, in the order they bolt together.