Goku Black appears in' "Future Trunks Special Edition" attempting to kill Trunks but being prevented by Mai's intervention, this appearance taking place before his initial appearance in "Dragon Ball Super".
Goku Black appears in' "Future Trunks Special Edition" attempting to kill Trunks but being prevented by Mai's intervention. Mai's intervention is this appearance. This appearance is taking place before his initial appearance in "Dragon Ball Super".