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Since the very beginning of the dance survival program back in June, iKON and MONSTA X  have been a part of the competition while Psy had been sitting as one of the judges. Despite their stellar performances thus far, the Korean judge and competitors did not make any appearances on the latest episode aired on August 21. 

During the entire broadcast, iKON and MONSTA X were nowhere to be seen, while Psy's face was blurred out. In addition, Psy has also been removed from the program's main web page. 

The current controversy regarding THAAD is assumed to have caused this occurrence.