Question: Cierra Alexa Ramírez  is an American actress best known for her role in a television series created by who?

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Alexa Nikolas: Alexa Nikolas (born April 4, 1992) is an American actress.  She is known for her role as Nicole Bristow on the Nickelodeon television series "Zoey 101".  Nikolas has also appeared on various other television series, including "That's Life", "Hidden Hills", "Revelations", and "The Walking Dead".

Alexa Davies: Alexa Davies (born 18 August 1995) is a Welsh actress best known for her role as Aretha in "Raised by Wolves" and Yvonne in "Cradle to Grave".

Bebe Wood: Bebe Wood is an American actress best known for her breakout role as Shania in the NBC television series "The New Normal".  She is presently co-starring as Shannon in the ABC television series "The Real O'Neals" which debuted on March 8, 2016.

Emma Caulfield: Emma Caulfield (born Emma M. Chukker; April 8, 1973) is an American actress best known for her role as Anya Jenkins on the television series "Buffy the Vampire Slayer" (1998–2003), as well as Susan Keats, a love interest of Brandon Walsh's on the television series "Beverly Hills, 90210".  Her film roles include "Darkness Falls" (2003) and "TiMER" (2009).

Kathryn Newton: Kathryn Newton (born February 8, 1997) is an American actress best known for her role as Louise Brooks in the CBS television series "Gary Unmarried" as well as for her role as Alex Nelson in the 2012 feature film "Paranormal Activity 4", which earned her the 2013 Young Artist Award for Best Leading Young Actress in a Feature Film.  She is also known for portraying the older version of Claire Novak in the CW series "Supernatural".

The Fosters (2013 TV series): The Fosters is an American family drama television series created by Peter Paige and Bradley Bredeweg which first premiered in the United States on June 3, 2013 on the Freeform (previously named ABC Family) television network.  It follows the lives of the Foster family led by lesbian couple Stef and Lena, a cop and school vice principal respectively, who raise one biological and four adopted children in San Diego, California.

Brook Toland: Brook Toland is an American actress best known for her role on ABC Family's "Becoming Us" television show, which was produced by Ryan Seacrest.  Prior to this, Toland co-starred in an independent film called "Innocent" in 2009 with Alexa Vega.

Cierra Ramirez: Cierra Alexa Ramírez (born March 9, 1995) is an American actress, model and singer.  She is best known for her role as Mariana Adams-Foster in the Freeform television series "The Fosters."

Jean Hagen: Jean Hagen (August 3, 1923 – August 29, 1977) was an American actress best known for her role as Lina Lamont in "Singin' in the Rain" (1952), for which she was nominated for an Academy Award for Best Supporting Actress.  Hagen was also nominated three times for an Emmy Award for Best Supporting Actress in a Comedy Series for her role as Margaret Williams (1953-56) on the television series "Make Room For Daddy".

Barbara Hale: Barbara Hale (April 18, 1922 – January 26, 2017) was an American actress best known for her role as legal secretary Della Street on more than 270 episodes of the long-running "Perry Mason" television series from 1957 to 1966, earning her a 1959 Emmy Award as Outstanding Supporting Actress in a Drama Series.  She reprised the role in 30 Perry Mason movies for television.  Her many film roles included "The Window" (1949), in which she starred as the mother of a boy who witnesses a murder.

Supporting paragraphs: Cierra Ramirez The Fosters (2013 TV series)
Answer: Peter Paige and Bradley Bredeweg