Hundreds of robots have gathered at the International Robot Exhibition (IREX) now underway at Tokyo Big Sight. Here are a few photos from the event, which runs until November 28.

Yaskawa Electric Corporation displayed a variety of Motoman industrial robots able to perform tasks ranging from menial factory work to synchronized swordplay.

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Taizo, a clown-like assistant trainer robot by General Robotix, encouraged passersby to do stretching exercises.

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Fuji Heavy Industries (Subaru) exhibited their AV-T3 autonomous cargo transport robot.

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Fuji Heavy Industries (Subaru) also showcased their autonomous floor cleaning robot (developed jointly with Sumitomo), which was recognized as Robot of the Year in 2006.

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Neko-Tencho, a cat robot developed by RT, danced with its naked skeleton.

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The Manoi PF01 and AT01 athlete humanoids relaxed on a table at the Kyosho booth.

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Figla exhibited an interactive robot (prototype) with remote camera.

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An Actroid was on hand at Kokoro’s booth to demonstrate new camera-based face mimicking technology.

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TOPIO, a ping pong playing robot by TOSY (Vietnam), waited for a worthy opponent.

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The iRobi home robot by Yujin (Korea) can monitor the home, provide weather information and news, respond to voice commands, and entertain the kids with songs.

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NT Research (Korea) demonstrated their RAMeX humanoid with tele-operated arms and hands.

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An intelligent building guide robot with arms, speech capabilities, and face/voice recognition skills was on display at the “Premium Korea” booth.

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Alderbaran Robotics (France) exhibited Nao, a fully-programmable autonomous humanoid.

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NEC’s display included the Papero-mini tele-collaboration robot, which lacks the AI brain of its big brother and functions as a home videoconferencing tool.

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Fujitsu’s Enon robot received some minor adjustments at the New Energy and Industrial Technology Development Organization (NEDO) booth.

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NEDO also exhibited a Muratec receptionist robot.

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A mini-humanoid blended into the crowd.

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CMC Technology Development Co., Ltd. exhibited Robockle, a collision avoidance robot loaded with an array of CMCTD’s sensors.

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Kawada Industries demonstrated their NEXTAGE next-generation industrial robot.

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They also exhibited their HIRO humanoid upper body for R&D purposes.

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Saya, a receptionist robot, was on display at the Kobayashi Laboratory (University of Tokyo) booth.