On this week's 'Radio Star,' Han Jae Won appeared as a guest and had a special treat for everyone! He showcased his love for robots by having five of them from the movie "The Avengers" do a special programmed performance of Crayon Pop's "Bar Bar Bar"! The robots included Iron Man, The Incredible Hulk, Captain America, Thor, and Loki.

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The MCs and guests all enjoyed the show, but also poked fun, saying the one on the far left (Captain America) was a bit off by facing away from the audience and saying the robots looked cheesy. Overall, it was a very cool performance so you can check it out above at the 1:20 mark!