On more than one occasion, the actors who play mother and daughter, father and son or brothers in a series are not very credible, since they are not at all physically alike. However, there are cases in which the director of casting he does such a good job of casting the actors that it’s impossible not to think they’re really family.
As well as the actors of Dark They managed to fool us and make us believe that they seriously shared the same blood because of the great resemblance they had, these 30 actors who pose as relatives in a series share such similar traits that it is difficult to believe that they are not related at all.
1. Haley and Quinn in One Tree Hill
They were sisters played by Bethany Joy Lenz and Shantel VanSanten.
2. Theodora and Olivia in The Haunting Of Hill House
They were mother and daughter played by Kate Siegel and Carla Gugino.
3. Lady Mary and Cora in Downton Abbey
They were mother and daughter played by Michelle Dockery and Elizabeth McGovern.
4. Dre and Pops in Black-ish
They were father and son played by Anthony Anderson and Laurence Fishburne.
5. Buffy and Joyce in Buffy, the cazavampiros
They were mother and daughter played by Sarah Michelle Gellar and Kristine Sutherland.
6. Randy and Tim in Improving the house
They were father and son played by Jonathan Taylor Thomas and Tim Allen.
7. Izzy and Elena in Little Fires Everywhere
They were mother and daughter played by Megan Stott and Reese Witherspoon.
8. Björn and Ragnar en Vikings
They were father and son played by Alexander Ludwig and Travis Fimmel.
9. Devi and Nalini in Never Have I Ever
They were mother and daughter played by Maitreyi Ramakrishnan and Poorna Jagannathan.
10. Peyton y Ellie in One Tree Hill
They were mother and daughter played by Hilarie Burton and Sheryl Lynn Lee.
11. Adam and Mr. Groff in Sex Education
They were father and son played by Connor Swindells and Alistair Petrie.
12. Orla and Sarah in Derry Girls
They were mother and daughter played by Louisa Harland and Kathy Kiera Clarke.
13. Lena and Lillian in Supergirl
They were mother and daughter played by Katie McGrath and Brenda Strong.
14. Niles and Frasier in Frasier
They were brothers played by David Hyde Pierce and Kelsey Grammer.
15. Veronica and Hermione in Riverdale
They were mother and daughter played by Camila Mendes and Marisol Nichols.

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