Question: The Grim Reaper is a central character in which Alejandro Casona play?

Context paragraphs:
Alejandro Casona: Alejandro Rodríguez Álvarez, known as Alejandro Casona (March 3, 1903 – September 17, 1965) was a Spanish poet and playwright born in Besullo, Spain, a member of the Generation of '27.  Casona received his bachelor's degree in Gijon and later studied at the University of Murcia.  After Franco's rise in 1936, he was forced, like many Spanish intellectuals, to leave Spain.  He lived in Buenos Aires, Argentina until April 1962, when he definitively returned to Spain.

La dama del alba: La dama del alba ("The Lady of the Dawn" in English) is a Spanish play, very popular in its own country, written by playwright Alejandro Casona in 1944.  It is a fantasy-drama in which Death personified is the main character.  It takes place in a small village in the Spanish Principality of Asturias.  The play consists of four acts.

Death (personification): Death, also known as the Grim Reaper, is frequently imagined as a personified force, due to its prominent place in human culture.  In some mythologies, the Grim Reaper causes the victim's death by coming to collect them.  In turn, people in some stories try to hold on to life by avoiding Death's visit, or by fending Death off with bribery or tricks.  Other beliefs hold that the Spectre of Death is only a psychopomp, serving to sever the last ties between the soul and the body, and to guide the deceased to the afterlife, without having any control over when or how the victim dies.  Death is most often personified in male form, although in certain cultures Death is perceived as female (for instance, Marzanna in Slavic mythology).

Yu Yu Hakusho: Spirit Detective: Yu Yu Hakusho: Spirit Detective is a video game for the Game Boy Advance (GBA) handheld console.  Based on the popular manga and anime series "YuYu Hakusho" created by Yoshihiro Togashi, the plot follows the central character Yusuke Urameshi, a street-brawling, often truant teenager who dies trying to save a young boy’s life.  After meeting an incarnation of the Grim Reaper, Yusuke is given a second chance at life as a “Spirit Detective”, a protector of the living world.

Chateaux (band): Chateaux were a new wave of British heavy metal band formed in 1981 in Cheltenham, Gloucestershire, United Kingdom.  They released three albums during the 1980s through Ebony Records, then home to the likes of Grim Reaper and Savage.  The band is notable for launching the career of Steve Grimmett, later of Grim Reaper and Onslaught.

Best of Grim Reaper: Best of Grim Reaper is a compilation album by Grim Reaper.  The songs are drawn from Grim Reapers singles and albums, including the three albums which made the Billboard 200 Albums Chart.

Las Tres perfectas casadas: Las tres perfectas casadas ("The Three Perfect Wives") is a 1953 Mexican comedy film directed by Roberto Gavaldón, based on the eponymous play by Alejandro Casona.  It was entered into the 1953 Cannes Film Festival.

Crosswords (EP): Crosswords is the second extended play album by American recording artist Panda Bear.  It was released on August 20, 2015 by the Domino Recording Company.  This release features an updated audio mix of the track "Crosswords" from the version on his fifth studio album "Panda Bear Meets the Grim Reaper".  The other 4 tracks on the release were not included on "Panda Bear Meets the Grim Reaper", however, an earlier version of "The Preakness" appears on Animal Collective's 2011 EP "Keep + Animal Collective" and the deluxe edition of Panda Bear album "Tomboy".

Panda Bear Meets the Grim Reaper: Panda Bear Meets the Grim Reaper is the fifth studio album by American recording artist Panda Bear (Noah Lennox).  It was released on January 9, 2015 by the Domino Recording Company.  "Panda Bear Meets the Grim Reaper" was preceded by the digital release of an extended play, "Mr Noah", and two singles, "Mr Noah" and "Boys Latin".  It was followed by the extended play "Crosswords".

Grim Reaper (advertisement): The Grim Reaper commercial is a 1987 Australian television commercial aimed at raising public awareness on the dangers of AIDS.  Created as part of a $3 million education campaign by the National Advisory Committee on AIDS (NACAIDS), the advertisement depicted the Grim Reaper bowling in a bowling alley and knocking over men, women, and child "pins" which represented AIDS victims.  The commercial first screened on 5 April 1987 and was highly controversial, one reason being that the Grim Reaper became identified with gay men.  Nevertheless, the commercial was regarded as highly successful in educating the Australian public about the issue.  The commercial was created by Siimon Reynolds and spoken by voice-over artist John Stanton.

Supporting paragraphs: La dama del alba Death (personification)
Answer: La dama del alba