The8/Xu Minghao part of south korean boy group seventeen. He is also amazing

a Feckless, Shameless, Coward whose purpose in Life is to please Donald J. Trump with Oral Praise and Bullshit Compliments. ( Noun ).

The first definition for "the 8" is a guy whom no matter what the circumstance he will listen to others and do what they say. The second definition is a slang term used for a computer. The 8 could also mean somebody who is full of useless information just like a computer and uses false words and needless phrases at the wrong time.