As the boys are from the KBS 2TV show 'The Unit', they've only been on KBS's 'Music Bank' and other KBS variety shows, such as 'Gag Concert', 'Yoo Hee Yeol's Sketchbook', and 'Immortal Song'. There was expected to be some difficulty in the boys appearing on other broadcast channels, like IOI originally had with MBC and SBS.
However, the upcoming April 14 episode of 'Show! Music Core' will be the first non-cable, non-KBS broadcast that UNB will be on! So make sure to catch their performance!