Greta Thunberg is a Swedish environmental activist known for challenging world leaders to take immediate action to mitigate the effects of human-caused climate change. Born in Stockholm in 2003, her climate activism began when she persuaded her parents to adopt lifestyle choices that reduced their family's carbon footprint. Thunberg gained international attention for her bold actions, including skipping school and protesting outside the Swedish parliament, calling for stronger action on climate change. Her youth and blunt speaking manner fueled her rise to the status of a global icon, inspiring other students to engage in similar protests and organize the school strike for the climate movement. Thunberg's activism continued to gain international attention, and her protest tactics have become increasingly assertive, including peaceful demonstrations and acts of civil disobedience. She has also expanded her advocacy to include other causes, supporting various conflicts around the world. Despite facing heavy criticism due to her age, Thunberg has been recognized with numerous honors and awards, including being named the youngest Time Person of the Year in 2019 and being included in the Forbes list of The World's 100 Most Powerful Women. Thunberg's rise to world fame has made her an ad hoc leader in the climate activist community, and her influence on the world stage has been described as the "Greta effect."

Greta Gerwig is an accomplished American actress, screenwriter, and film director. Initially recognized for her work in mumblecore films, she has since expanded her career to include directing major studio films. Her notable collaborations with her husband Noah Baumbach include films like "Greenberg", "Frances Ha", "Mistress America", and "White Noise". Gerwig has also starred in a variety of films such as "Damsels in Distress", "To Rome with Love", "Jackie", "20th Century Women", and "Isle of Dogs". As a solo filmmaker, she has written and directed acclaimed coming-of-age films like "Lady Bird" and "Little Women", which received multiple Academy Award nominations.Born in Sacramento, California, Gerwig grew up in the River Park neighborhood and attended St. Francis High School before graduating from Barnard College with a degree in English and philosophy. She showed an early interest in dance and later pursued competitive fencing. Throughout her early career, she worked with renowned filmmakers and steadily built her reputation as a talented and versatile artist.Gerwig's contributions to the film industry have earned her a well-deserved spot on the annual Time 100 list of the most influential people in the world in 2018. With her unique vision and storytelling abilities, she continues to inspire and captivate audiences with her work.

Greta Scacchi, OMRI, is an acclaimed actress recognized for her compelling performances in a diverse range of films and television productions. Born in Milan, Italy, on February 18, 1960, Scacchi's multicultural upbringing and linguistic fluency in English, French, German, and Italian have contributed to her international appeal and success in European casting circles. Her career catapulted after her remarkable leading role in the romantic drama film "Heat and Dust" (1983), garnering her a BAFTA Award nomination and marking the beginning of a prolific acting journey. Throughout her illustrious career, Scacchi has delivered memorable portrayals in notable works such as "White Mischief" (1987), "Presumed Innocent" (1990), "The Player" (1992), and "Looking for Alibrandi" (2000). Notably, her portrayal of Alexandra of Hesse in the biographical television film "Rasputin: Dark Servant of Destiny" earned her a Primetime Emmy Award and a Golden Globe Award nomination, showcasing her remarkable talent and versatility. Beyond her screen endeavors, Scacchi has also showcased her theatrical prowess in various plays, enriching her artistic repertoire. Her multifaceted career and dedication to her craft have solidified her status as a revered figure in the entertainment industry.

Greta Friedman, also known as Grete Zimmer, was an Austrian-born American famous for being captured in the iconic V-J Day in Times Square photograph of 1945. She was born on June 5, 1924, in Wiener Neustadt, Austria, to a Jewish family. In 1939, she emigrated to the United States to escape Nazi-controlled Austria. Friedman worked as a dental assistant and pursued education at various institutions, including Queens Vocational High School and the Fashion Institute of Technology. On V-J Day, August 14, 1945, she found herself in Times Square, where a sailor grabbed and kissed her, a moment immortalized by photographer Alfred Eisenstaedt. It was not until the 1960s that Friedman recognized herself in the photograph, leading to her eventual confirmation as the woman in the iconic image. Despite the popular romantic interpretation of the photograph, Friedman expressed mixed feelings about the event, stating that it was not a consensual kiss but rather a jubilant act. In 1956, she married Dr. Mischa Friedman and moved to Frederick, Maryland, where she pursued her artistic interests and worked at Hood College. Greta Friedman passed away on September 8, 2016, leaving behind a legacy as an iconic figure in American history.

Greta Bösel (née Mueller) was a German nurse and camp guard at Ravensbrück concentration camp during the Holocaust. Born on May 9, 1908, in Wuppertal-Elberfeld, Germany, she became a camp guard in August 1944. Bösel held the position of Arbeitseinsatzführerin, a leading assistant in the camp labour office, and was involved in the selection of prisoners for the gas chamber or transfer to Uckermark. She was known for her callous statement, "If they cannot work, let them rot." After the liberation of the camp, Bösel fled with her husband but was later arrested by British troops. Subsequently, she was tried at the first Ravensbrück Trial and found guilty of maltreatment, murder, and taking part in the "selections." Bösel was executed on May 3, 1947, for her crimes. Her story serves as a grim reminder of the atrocities committed during the Holocaust.