The clip is from JTBC's 'Hip Hop Nation 2' that aired back in 2016. During the final stage of P-Type and Park Kwang Sun, the audience is caught on camera for several seconds and this is where the fans spotted an unexpected figure in the crowd.�

Among the cheerful fans enjoying the performance is Kang Daniel, who at the time was a trainee. The hot idol star is captured flashing a huge smile showing his adorable bunny teeth.�

SEE ALSO: Kang Daniel kicks off Asia tour with concerts in Tokyo and Osaka

It seems JTBC also heard about Kang Daniel's special pre-debut appearance on the past show. On February 1, the broadcasting station uploaded the special footage on their official YouTube channel with the title 'Kang Daniel before 'Produce 101'' and stated, "Daniel, why are you there?"

What an unexpected (but very delightful) appearance!