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Wilhelm, German Crown Prince, Crown Prince of Prussia (Friedrich Wilhelm Victor August Ernst; 6 May 1882 – 20 July 1951) was the eldest child of the last Kaiser, Wilhelm II, German Emperor, and his consort Augusta Victoria of Schleswig-Holstein, and thus a great-grandson of Queen Victoria, and distant cousin to many British Royals, such as Queen Elizabeth II. As Emperor Wilhelm's heir, he was the last Crown Prince of the German Empire and the Kingdom of Prussia, until the abolition of the monarchy.
Wilhelm became crown prince at the age of six in 1888, when his grandfather Frederick III died and his father became emperor. He was crown prince for 30 years until the fall of the empire on 9 November 1918. During World War I, he commanded the 5th Army from 1914 to 1916 and was commander of the Army Group German Crown Prince for the remainder of the war. After his return to Germany in 1923, he fought the Weimar Republic and campaigned for the reintroduction of the monarchy in Germany. After his plans to become president had been blocked by his father, Wilhelm supported Adolf Hitler's rise to power, but when Wilhelm realised that Hitler had no intention of restoring the monarchy, their relationship cooled. Wilhelm became head of the House of Hohenzollern on 4 June 1941 following the death of his father and held the position until his own death on 20 July 1951.

Maurits Cornelis Escher (Dutch pronunciation: [ˈmʌurɪt͡s kɔrˈneːlɪs ˈɛʃər]; 17 June 1898 – 27 March 1972) was a Dutch graphic artist who made woodcuts, lithographs, and mezzotints, many of which were inspired by mathematics.
Despite wide popular interest, for most of his life Escher was neglected in the art world, even in his native Netherlands. He was 70 before a retrospective exhibition was held. In the late twentieth century, he became more widely appreciated, and in the twenty-first century he has been celebrated in exhibitions around the world.
His work features mathematical objects and operations including impossible objects, explorations of infinity, reflection, symmetry, perspective, truncated and stellated polyhedra, hyperbolic geometry, and tessellations. Although Escher believed he had no mathematical ability, he interacted with the mathematicians George Pólya, Roger Penrose, and Donald Coxeter, and the crystallographer Friedrich Haag, and conducted his own research into tessellation.
Early in his career, he drew inspiration from nature, making studies of insects, landscapes, and plants such as lichens, all of which he used as details in his artworks. He traveled in Italy and Spain, sketching buildings, townscapes, architecture and the tilings of the Alhambra and the Mezquita of Cordoba, and became steadily more interested in their mathematical structure.
Escher's art became well known among scientists and mathematicians, and in popular culture, especially after it was featured by Martin Gardner in his April 1966 Mathematical Games column in Scientific American. Apart from being used in a variety of technical papers, his work has appeared on the covers of many books and albums. He was one of the major inspirations for Douglas Hofstadter's Pulitzer Prize-winning 1979 book Gödel, Escher, Bach.

Yoshihito (Japanese: 嘉仁, 31 August 1879 – 25 December 1926), posthumously honored as Emperor Taishō (大正天皇, Taishō-tennō), was the 123rd emperor of Japan, according to the traditional order of succession, reigning from 1912 until his death in 1926. The era he presided over is known as the Taishō era.
Born to Emperor Meiji and his concubine Yanagiwara Naruko, Yoshihito was proclaimed crown prince in 1888, his two older siblings having died in infancy. In 1900, he married Kujō Sadako, a member of the Kujō family of the Fujiwara clan. The couple had four children: Hirohito, Yasuhito, Nobuhito and Takahito. Upon the death of his father in 1912, Yoshihito ascended the Chrysanthemum Throne. Suffering from neurological issues for the better part of his life, he played only a limited role in politics and from 1919 on undertook no official duties. His reign was characterized by a liberal and democratic shift in political power known as Taishō Democracy. It also saw Japan's entrance in the First World War and the Great Kantō earthquake of 1923.
Yoshihito's declining health led to the appointment of Crown Prince Hirohito as prince regent in 1921. He spent the rest of his life as a recluse. In 1926, Yoshihito died of a heart attack at the age of 47 following a bout of pneumonia. He was succeeded by his eldest son, Hirohito, as Emperor of Japan.

Oscar II (Oscar Fredrik; 21 January 1829 – 8 December 1907) was King of Sweden from 1872 until his death in 1907 and King of Norway from 1872 to 1905.
Oscar was the son of King Oscar I and Queen Josephine. He inherited the Swedish and Norwegian thrones when his brother died in 1872. Oscar II ruled during a time when both countries were undergoing a period of industrialization and rapid technological progress. His reign also saw the gradual decline of the Union of Sweden and Norway, which culminated in its dissolution in 1905. In 1905, the throne of Norway was transferred to his grandnephew Prince Carl of Denmark under the regnal name Haakon VII. When Oscar died in 1907, he was succeeded in Sweden by his eldest son, Gustaf V.
Oscar II is the paternal great-great-grandfather of King Carl XVI Gustaf of Sweden. King Frederik X of Denmark is Oscar II's descendant through his son Gustaf V. King Harald V of Norway; King Philippe of the Belgians; and Henri, Grand Duke of Luxembourg are also descendants of Oscar II, all through his third son Prince Carl, Duke of Västergötland.

Kathryn Dawn Lang (born November 2, 1961), known by her stage name k.d. lang, is a Canadian pop and country singer-songwriter and occasional actress. Lang has won Juno Awards and Grammy Awards for her musical performances. Hits include the songs "Constant Craving" and "Miss Chatelaine".
A mezzo-soprano, lang has contributed songs to movie soundtracks and has collaborated with musicians such as Roy Orbison, Tony Bennett, Elton John, The Killers, Anne Murray, Ann Wilson, and Jane Siberry. She performed at the closing ceremony of the 1988 Winter Olympics in Calgary, Alberta, and at the opening ceremony of the 2010 Winter Olympics in Vancouver, British Columbia, where she performed Leonard Cohen's "Hallelujah".
Lang has also been active as an animal rights, gay rights, and Tibetan human rights activist. She is a tantric practitioner of the old school of Tibetan Buddhism.

Willem-Alexander (Dutch: [ˈʋɪləm aːlɛkˈsɑndər]; Willem-Alexander Claus George Ferdinand; born 27 April 1967) is King of the Netherlands.
Willem-Alexander was born in Utrecht during the reign of his maternal grandmother, Queen Juliana, as the eldest child of Princess Beatrix and Prince Claus. He became Prince of Orange as heir apparent upon his mother's accession on 30 April 1980. He went to public primary and secondary schools in the Netherlands, an international sixth-form college in Wales, served in the Royal Netherlands Navy, and studied history at Leiden University. He married Máxima Zorreguieta Cerruti in 2002, and they have three daughters: Catharina-Amalia, Alexia, and Ariane. Willem-Alexander succeeded his mother as monarch upon her abdication in 2013.
Willem-Alexander is interested in sports and international water management issues. Until his accession to the throne, he was a member of the International Olympic Committee (1998–2013), chairman of the Advisory Committee on Water to the Dutch Minister of Infrastructure and the Environment (2004–2013), and chairman of the Secretary-General of the United Nations' Advisory Board on Water and Sanitation (2006–2013).

Gerald Rudolph Ford Jr. ( JERR-əld; born Leslie Lynch King Jr.; July 14, 1913 – December 26, 2006) was an American politician who served as the 38th president of the United States from 1974 to 1977. He previously served as the leader of the Republican Party in the U.S. House of Representatives from 1965 to 1973, and as the 40th vice president under President Richard Nixon from 1973 to 1974. Ford succeeded to the presidency when Nixon resigned in 1974, but was defeated for election to a full term in 1976. Ford is the only person to become U.S. president without winning an election for president or vice president.
Ford was born in Omaha, Nebraska and raised in Grand Rapids, Michigan. He attended the University of Michigan, where he played for the school's football team before eventually attending Yale Law School. Afterward, he served in the U.S. Naval Reserve from 1942 to 1946. Ford began his political career in 1949 as the U.S. representative from Michigan's 5th congressional district, serving in this capacity for nearly 25 years, the final nine of them as the House minority leader. In December 1973, two months after Spiro Agnew's resignation, Ford became the first person appointed to the vice presidency under the terms of the 25th Amendment. After the subsequent resignation of President Nixon in August 1974, Ford immediately assumed the presidency.
Domestically, Ford presided over the worst economy in the four decades since the Great Depression, with growing inflation and a recession. In one of his most controversial acts, he granted a presidential pardon to Nixon for his role in the Watergate scandal. Foreign policy was characterized in procedural terms by the increased role Congress began to play, and by the corresponding curb on the powers of the president. Ford signed the Helsinki Accords, which marked a move toward détente in the Cold War. With the collapse of South Vietnam nine months into his presidency, U.S. involvement in the Vietnam War essentially ended. In the 1976 Republican presidential primary, Ford defeated Ronald Reagan for the Republican nomination, but narrowly lost the presidential election to the Democratic challenger, Jimmy Carter.
Following his years as president, Ford remained active in the Republican Party, but his moderate views on various social issues increasingly put him at odds with conservative members of the party in the 1990s and early 2000s. He also set aside the enmity he had felt towards Carter following the 1976 election and the two former presidents developed a close friendship. After experiencing a series of health problems, he died in Rancho Mirage, California in 2006. Surveys of historians and political scientists have ranked Ford as a below-average president, though retrospective public polls on his time in office were more positive.

Carl XVI Gustaf (Carl Gustaf Folke Hubertus; born 30 April 1946) is King of Sweden.
Carl Gustaf was born during the reign of his great-grandfather, King Gustaf V. He is the youngest child and only son of Prince Gustaf Adolf, Duke of Västerbotten, and Princess Sibylla of Saxe-Coburg and Gotha. His father died in January 1947 in an airplane crash in Denmark when Carl Gustaf was nine months old. Carl Gustaf became crown prince and heir apparent to the Swedish throne at the age of four when his grandfather, King Gustaf VI Adolf, ascended the throne in 1950.
Carl Gustaf ascended the throne upon his grandfather's death on 15 September 1973. Shortly after he became king, the new 1974 Instrument of Government took effect, formally stripping Carl Gustaf of his remaining executive power. As a result, he no longer performs many of the duties normally accorded to a head of state, such as the formal appointment of the prime minister, signing off on legislation, and being commander-in-chief of the nation's military. The new instrument explicitly limited the king to ceremonial functions and, among other things, to be regularly informed of affairs of state. As head of the House of Bernadotte, Carl Gustaf has also been able to make a number of decisions about the titles and positions of its members.
In June 1976, Carl Gustaf married Silvia Sommerlath. They have three children: Victoria, Carl Philip, and Madeleine. The King's heir apparent, after passage on 1 January 1980 of a new law establishing absolute primogeniture, is his eldest child, Crown Princess Victoria. Before the passage of that law, Victoria's younger brother, Carl Philip, was briefly the heir apparent, as of his birth in May 1979. Carl XVI Gustaf is the longest-reigning monarch in Swedish history, having surpassed King Magnus IV's reign of 44 years and 222 days on 26 April 2018.

Alexandra Feodorovna (Russian: Александра Фёдоровна; 6 June [O.S. 25 May] 1872 – 17 July 1918), Princess Alix of Hesse and by Rhine at birth, was the last Empress of Russia as the consort of Emperor Nicholas II from their marriage on 26 November [O.S. 14 November] 1894 until his forced abdication on 15 March [O.S. 2 March] 1917. A favourite granddaughter of Queen Victoria of the United Kingdom, she was, like her grandmother, one of the most famous royal carriers of haemophilia and bore a haemophiliac heir, Alexei Nikolaevich, Tsarevich of Russia. Her reputation for encouraging her husband's resistance to the surrender of autocratic authority and her known faith in the Russian mystic Grigori Rasputin severely damaged her popularity and that of the Romanov monarchy in its final years. She and her immediate family were all murdered while in Bolshevik captivity in 1918, during the Russian Revolution. In 2000, the Russian Orthodox Church canonized her as Saint Alexandra the Passion Bearer.

Alexander (アレクサンダー, Arekusandā, sometimes stylized as ALEXANDER, born December 3, 1982) is a Japanese-Peruvian actor and model. His old stage names were Enrique (エンリケ, Enrike) and Enrique Sakamoto (坂本 エンリケ, Sakamoto Enrike). He is nicknamed Alec (アレク, Areku). His wife is former AKB48 member Nozomi Kawasaki.