Continuity mistake: When Courage gives the chicken his suitcase, it at first says "Mars" on it, but then it changes to "Albany".
Courage the Cowardly Dog (1999)
1 mistake in show generally - chronological order
Starring: Lionel G. Wilson, Marty Grabstein, Peter Fernandez, Simon Prebble, Thea White
Freaky Fred: Goodbye, dear aunt, I'll miss your farm. And Eustace's eboliant charm. And farewell, Courage, what's the harm? If I was slightly... naughty. With love, Fred.
Serpent Of The Evil River / The Transplant - S2-E9
Trivia: When the computer is telling Courage about the giant kangaroo monster, the chicken it steps on looks just like the alien chicken from the very first episode of the show. It even has red eyes.
Answer: Eustace is a rather two-dimensional antagonist character. He is just a mean-spirited man who takes out his hostilities on a vulnerable dog and resents his wife having adopted him.
raywest ★
I thought the reason had to do with the attention Courage receives from Muriel.