This is a list o actors that could possibly play Dick Grayson and Robin/Nightwing either in movies or tv shows

Logan Lerman as Dick Grayson/Nightwing

Danny Shepherd as Dick Grayson/Nightwing

Lucy Hale as Dixie Grayson/Nightwing  (Genderbent Dick Grayson)

Finn Wolfhard as Dick Grayson/Robin

Steven Yuen as Dick Grayson/Nightwing

Zac Efron as Dick Grayson/Nightwing

Noah Centenario as Dick Grayson/Robin