NFL star DK Metcalf wanted to honor some of his Black heroes -- from MLK to MJ -- so he flew in a tattoo artist to ink their faces on his body.
Michael Jordan. Jackie Robinson. Martin Luther King Jr. Muhammad Ali.
All of these legends are now immortalized on the Seahawks WR's left leg -- and the artwork is pretty incredible.
In fact, we're told the 22-year-old only trusted one guy to apply the ink -- Wade Gracia from Pharos Ink in Santa Ana.
But since Metcalf is based Seattle -- where he's been gettin ready for the 2020 NFL season -- he FLEW IN the artist to get the work done at his home.