Question: Who was this German actor who appeared in "Aguirre, the Wrath of God" (1972) and "And God Said to Cain" (1970)?

Context articles: Aguirre, the Wrath of God
Aguirre (soundtrack)
Lope de Aguirre
The Divine Image
Apocalypse Now
Genesis 1:3
And God Said to Cain
Klaus Kinski
Wings of Hope (film)
A Stranger in Paso Bravo

Aguirre, the Wrath of God (German: "Aguirre, der Zorn Gottes" ), known in the UK as Aguirre, Wrath of God, is a 1972 West German epic film written and directed by Werner Herzog.
 Klaus Kinski stars in the title role.
 The soundtrack was composed and performed by West German progressive/Krautrock band Popol Vuh.
 The story follows the travels of Spanish soldier Lope de Aguirre, who leads a group of conquistadores down the Orinoco and Amazon River in South America in search of the legendary city of gold, El Dorado.
Aguirre is the seventh album by German band Popol Vuh.
 It contains music used in the soundtrack to Werner Herzog's film "Aguirre, the Wrath of God" (1972), first released as an album in 1975 on Ohr, and reissued in 2004 by SPV with one bonus track.
 This score was the first of many filmic collaborations between the group and Herzog.
 Only two tracks ("Aguirre I" and "Aguirre II") are from the film; the rest were gathered from various recordings done by the group during the period 1972–74, including alternative versions of two songs ("Morgengruß II" and "Agnus Dei") originally released on the band's 1974 album, "Einsjäger und Siebenjäger".
Lope de Aguirre (8 November 1510 – 27 October 1561) was a Basque Spanish "conquistador" who was active in South America.
 Nicknamed "El Loco" ('the Madman'), he styled himself "Wrath of God, Prince of Freedom, King of Tierra Firme".
 Aguirre is best known for his final expedition down the Amazon river in search of the mythical golden King El Dorado.
 In 1561 Aguirre sent a letter which defied the Spanish monarch Philip II by declaring an independent state of Peru.
 Aguirre's expedition ended with his death, and in the years since then he has been treated by historians as a symbol of cruelty and treachery in the early history of colonial Spanish America, and has become an antihero in literature, cinema and other arts.
"The Divine Image" is a poem by the English poet William Blake from his book "Songs of Innocence" (1789), not to be confused with "A Divine Image" from "Songs of Experience" (1794).
 It was later included in his joint collection "Songs of Innocence and of Experience" (1794).
 In this poem (see Wikisource below) Blake pictures his view of an ideal world in which the four traditionally Christian virtues–Mercy, Pity, Peace and Love–are found in the human's heart and stand for God's support and comfort.
 Joy and gratitude are sentiments expressed through prayer for the caring and blessing of an infallible almighty God and are shared by all men on Earth encompassing a sense of equality and mutual respect.
 The title of the poem refers to the Book of Genesis Chapter 1 verse 26: 'And God said: Let us make man in our image'.
(KJV)
Apocalypse Now is a 1979 American epic war film directed, produced, and co-written by Francis Ford Coppola.
 It was co-written by John Milius with narration written by Michael Herr.
 It stars Marlon Brando, Robert Duvall, Martin Sheen, Frederic Forrest, Albert Hall, Sam Bottoms, Larry Fishburne, and Dennis Hopper.
 The screenplay, written by Milius, adapts the story of Joseph Conrad's novella "Heart of Darkness", changing its setting from late nineteenth-century Congo to the Vietnam War.
 It draws from Herr's "Dispatches" and Werner Herzog's "Aguirre, the Wrath of God" (1972).
 The film revolves around Captain Benjamin L. Willard (Sheen) on a secret mission to assassinate Colonel Kurtz, a renegade who is presumed insane.
Genesis 1:3 is the third verse of the first chapter in the Book of Genesis.
 In it, God (the Hebrew word used for God, like in all of Genesis 1, is Elohim) made light by declaration ("God said, 'Let there be light,' and there was light").
 It is a part of the Torah portion known as Bereshit (Genesis 1:1-6:8).
And God Said to Cain (Italian: E Dio disse a Caino , German: Satan der Rache ) is a 1970 Italian Western film directed by Antonio Margheriti and starring Klaus Kinski.
Klaus Kinski (born Klaus Günter Karl Nakszynski; 18 October 1926 – 23 November 1991) was a German actor.
 He appeared in more than 130 films, and was a leading role actor in the films of Werner Herzog, including "Aguirre, the Wrath of God" (1972), "Nosferatu the Vampyre" (1979), "Woyzeck" (1979), "Fitzcarraldo" (1982), and "Cobra Verde" (1987).
 He also appeared in many Spaghetti Westerns, such as "For a Few Dollars More" (1965), "A Bullet for the General" (1966), "The Great Silence" (1968), "And God Said to Cain" (1970), "Shoot the Living and Pray for the Dead" (1971) and "A Genius, Two Partners and a Dupe" (1975).
Wings of Hope (German: Julianes Sturz in den Dschungel ) is a 1998 made-for-TV documentary directed by Werner Herzog.
 The film explores the story of Juliane Koepcke, a German Peruvian woman who was the sole survivor of Peruvian flight LANSA Flight 508 following its mid-air disintegration after a lightning strike in 1971.
 Herzog was inspired to make this film since he had narrowly avoided taking the same flight while he was location scouting for "Aguirre, Wrath of God".
 His reservation was canceled due to a last minute change in itinerary.
A Stranger in Paso Bravo (Italian: "Uno straniero a Paso Bravo" , Spanish: "Los pistoleros de Paso Bravo" , also known as "Paso Bravo") is a 1968 Italian-Spanish Spaghetti Western film directed by Salvatore Rosso.
 It was the first and only film directed by Rosso, who had previously been assistant of a number of directors, notably Pietro Germi.
 The film was remade in 1969 by Antonio Margheriti as "And God Said to Cain"; despite being the same story and having the main characters sharing the same names, the two films list different screenwriters.
 The film underperformed at the Italian box office, grossing only 34 million lire.