Galathil

[Ange1e4e5]

Galathil is the sister of Celeborn, who has aligned with the Green Elves. The Hosts describe her as "firm and reserved, isolationist, rarely speaks". Also Mysterious and intimidating, a Mandos-type figure.

Olga Kurylenko certainly has experience playing a troubled soul and some as a Mandos-type figure; her character in Centurion is a mute and mostly communicates via body language.

Olga Kurylenko

Olga Kurylenko - IMDb

Olga Kurylenko. Actress: Oblivion. Olga Kurylenko, a Ukrainian-born actress and model, went from sharing a cramped flat with her aunt, uncle, grandparents and cousin to starring as a Bond girl opposite Daniel Craig. She was born Olga Konstantinovna Kurylenko on November 14, 1979, in Berdyansk...

www.imdb.com

Age: 39 (will be 40 in November)
Height: 5'9"
Roles: Camille in Quantum of Solace, Etain in Centurion

EDIT: WAS CHOSEN; OK BY EXECS

 

[Haakon]

I nominate Kelly Reilly

https://www.imdb.com/name/nm0717709/
Age: 42
Height: 5' 6"

Known from Sherlock Holmes, the series Britannia and True Detective, and she also played Caroline Bingley in Pride and Prejudice. An awarded actress who would also work well as Patrick Wilson's (our Celeborn) sister.

 

[Haakon]

Krysten Ritter.
https://www.imdb.com/name/nm1269983/?ref_=ttfc_fc_cl_t19
Age: 38 in Dec 2019
Height: 5' 9"

Known for roles in Breaking Bad and Jessica Jones. She can certainly be mysterious. Was nominated to play Ungoliant and Irimë in Silmfilm.