Though comedian and Boom Academy's leader Boom's real name is Lee Minho, he has "BOOM" stitched on his army hat. On Strong Heart's website, the Strong Heart staff wrote that they had actually went to visit Boom on the 23rd of January (visiting day) and updated their viewers about their meeting with Boom. The staff of Strong Heart said, "After he's discharged from the military, he asked us to cast him first and immediately so he can come back on Strong Heart. He even made a "Strong Heart Cast Agreement." In the pictures, you can see Boom holding this "agreement." I hope the agreement follows through because I sure miss his hilarious jokes on Strong Heart.