Potential face claims for Gellert Grindelwald:

NAME: Jamie Campbell
DATE OF BIRTH: 22 November 1988
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: blonde

NAME: Johnny Depp
DATE OF BIRTH: 9 June 1963
NATIONALITY: American
EYE COLOUR: brown/blue
HAIR COLOUR: brown/black/red/blonde/white

NAME: Jude Law
DATE OF BIRTH: 29 December 1972
NATIONALITY: British
EYE COLOUR: blue
HAIR COLOUR: brown/black/blonde

NAME: Mads Mikkelsen
DATE OF BIRTH: 22 November 1965
NATIONALITY: Danish
EYE COLOUR: brown
HAIR COLOUR: greying/brown/blonde/black

NAME: Lars Mikkelsen
DATE OF BIRTH: 6 May 1964
NATIONALITY: Danish
EYE COLOUR: blue
HAIR COLOUR: greying/brown/blonde

NAME: Aaron Carter
DATE OF BIRTH: 7 December 1987
NATIONALITY: American
EYE COLOUR: brown
HAIR COLOUR: blonde/bleached blonde

NAME: Hayden Christensen
DATE OF BIRTH: 19 April 1981
NATIONALITY: Canadian
EYE COLOUR: blue
HAIR COLOUR: brown/blonde/black

NAME: Michael Fassbender
DATE OF BIRTH: 2 April 1977
NATIONALITY: German and Irish
EYE COLOUR: blue
HAIR COLOUR: blonde

NAME: Dan Stevens
DATE OF BIRTH: 10 October 1982
NATIONALITY: British
HAIR COLOUR: blonde
EYE COLOUR: blue

NAME: Paul Boche
DATE OF BIRTH: 11 August 1987
NATIONALITY: German
EYE COLOUR: blue
HAIR COLOUR: blonde

(suggested by kencbi)