Board Thread:Game News and Announcements/@comment-30483434-20190717104203/@comment-27996636-20190720175922

It is fusion with only one body remaining. It is almost what Buu does, but at least Buu keeps them alive with the option of spitting them out again later. The Namekians just wander around somewhere as non speaking spirits.

My guess is they name him some different like "The one who has long since forgotten his name" then 5 minutes later he is called Piccolo and that is also from the Anime so probably another made up line.