Never, Hastings, never have I met a man so obnoxious.
~ Poirot being irritated at Sir Reuben

Sir Reuben Astwell is the secondary antagonist as well as the primary victim of Agatha Christie's Hercule Poirot short story The Under Dog, which would be included in her 1960 short story collection The Adventure of the Christimas Pudding and a Selection of Entrées.

He was a cruel and selfish industrialist who demanded profits from the war and abused his family as well as his subordinates. He was killed by the story's culprit out of revenge of his nine-year-old abuse upon them.

He was portrayed by Denis Lill in Agatha Christie's Poirot.

In the original story

In Agatha Christie's Poirot

In Agatha Christie's Poirot, Sir Reuben made his appearance in the beginning of his story when Poirot and Hastings arrived to visit him. However, much to his disgust, Poirot had discovered that Sir Reuben was a selfish and greedy man, who showed concern to nothing other than money. Even though he had a large collection of Belgian minirature, he showed no taste over art and was, in Poirot's words, obnoxious.

After the murder occured, Poirot discovered that Astwell's chemical company had developed synthetic rubber so precious that someone has broken into the company to try and steal the formula. Astwell himself was more than willing to sell it to the highest bidder, even the Nazis.

Nevertheless, it was revealed that the formula was actually developed by Charles, a chemist, whose sister Lily was working as Astwell's secretary. It was actually stolen by Astwell to profit in the war through selling them to Germany. In this version, Trefusis was a chemist who once had a share of the synthetic rubber's profit with Astwell, believing it to be the latter's work, but turned out Astwell decided to sell it to Germans. Trefusis decided to steal the contract and destroyed it, but he was discovered by Astwell, whom he accidentally killed after knocking him down with a minirature.

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Agatha Christie's Poirot (title card).png Villains

Murderers
Novels
Alfred Inglethorp | Alistair Ravenscroft | Ann Shapland | Anne Meredith | Bella Tanios | Claude Darrell | David Hunter | Dorothea Jarrow | Dr. Geoffrey Roberts | Dr. James Sheppard | Elsa Greer | Evelyn Howard | Franklin Clarke | Gerda Christow | Jacqueline de Bellefort | Jane Wilkinson | Jessie Hopkins | Lady Westholme | Lanfranco Cassetti | Marthe Daubreuil | Martin Alistair Blunt | Michael Garfield | Miss Chadwick | Miss Gilchrist | Nick Buckley | Nigel Chapman | Norman Gale | Patrick Redfern | Rowena Drake | Simon Doyle | Sir Charles Cartwright | Stephen Norton | Superintendent Sugden
Short Stories
Marrascaud | Nurse Harris | Roger Havering | Zoe Havering

Villainous Victims
Abandoned Accomplices
Anne Morisot | Carlotta Adams | Eileen Corrigan | Leslie Ferrier
Abusers
Lady Boynton | Lord Edgware | Simeon Lee
Blackmailers
Angèle Blanche | Charles Trenton | Henry Reedburn | Leopold Reynolds | Louise Bourget | Madame Giselle
Killers
Lanfranco Cassetti | Mrs. Lorrimer | Paul Déroulard | Stephen Norton
Unscrupulous
John Christow | Linnet Doyle | Mrs. Clapperton | Paul Renauld | Sir Reuben Astwell

Accomplices & Others
Alice Cunningham | Anne Morisot | Big Four | Carlotta Adams | Christine Redfern | Countess Vera Rosakoff | The Crofts | Eileen Corrigan | Frances Cloade | Freddie Rice's husband | George Challenger | Henrietta Savernake | Leslie Ferrier | Madame Daubreuil | Miss Van Schuyler | Rowley Cloade

Adaptational, Homage & Non-Canonical
Agatha Christie's Poirot: Grace Springer | Harrington Pace | Marie McDermott | Sister Agnieszka |

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