He has a strong sense of justice, believing that people who have a history of wrongdoing cannot be trusted to change for the better; as a result, he dislikes and is highly mistrustful of Wally Haggler. He can be very irritable, though he is looked up to by many, including Emily Jones; he is notorious for being "rudely terse". He was highly suspicious of several characters whom he believed to be involved in the Green Ring conspiracy, including Buck Oliver (though Buck outsmarted him), Monty Whittaker (briefly), and Agent Tanner.
- Detective Polehaus once claimed to have kidnapped a cow after hitting his head in a car accident; this may or may not have been a joke.
- He thinks his men are extremely incompetent and calls them clowns, among other names.
- His wife died 7 years prior to his investigation of the Green Ring; he mentioned this during said investigation while showing false romantic interest in a clerk.
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- He had a nephew who died of cancer at the age of five. (#852: “The Toy”)
|“|| John Whittaker: Detective, I've been thinking about Trickle Lake Concrete.
Don Polehaus: Yeah? And sometimes I think about large balls of lint, what about it?
|“|| Unknown : You're one of those guys who thinks being rudely terse is an endearing quality.
Don Polehaus: Am I wrong?
Unknown : I'll be right back.
|“|| Don Polehaus: I couldn't be happier with the verdict. Well, actually I could be, but to do that would involve reintroducing the kinds of punishments used back in the middle ages. Good times.
|“|| Don Polehaus: And the old cassette player?
Eugene Meltsner: I unearthed it from Mr. Whittaker's archives. When I push the button... <pushes it>
Unknown: ...Share the gospel before it's too late, and the best way to do it is communicate!
Don Polehaus: <overlapping> You’ll wanna change that.
Eugene Meltsner: Well, Perhaps so.
|“|| Hadley Bassett: I found the burglar going through Wooton's desk and cabinets.
Don Polehaus : Going through it how?
Hadley Bassett: Rifling through the draws and compartments in an urgent but orderly manner.
Don Polehaus : Uh-huh. Then what did you do?
Hadley Bassett: I shouted something like, "Hey, stop that!" or "Put that down!" Or I might have just—AHHHH!!!
|“|| Don Polehaus: Do you smell that?
John Whittaker: Smells like popcorn.
Don Polehaus: That's the smell of victory, which also smells a lot like popcorn!
|“|| Don Polehaus: Martin! Just the person I wanted to yell at.
|“|| Don Polehaus: By the way, do you find rudely terse endearing enough to consider having dinner with me?
Unknown : What about Mrs. Detective Polehaus?
Don Polehaus: She succumbed to a heart attack 7 years ago.
Unknown : I bet she's just using that as an excuse. Next customer please!
|“|| Emily Jones: Oooh! You're putting on latex gloves, that's so cool! Is that to protect any fingerprints?
Don Polehaus: No, it's to make sure I don't give the money any icky germs.
Emily Jones: Really?
Don Polehaus: No, it's to protect any fingerprints.
|“|| Miss Adelaide: Would you like to hang up a poster for the festival in the police station?
Don Polehaus: That's not my department. Uh-oh—does that mean the station is going to get hammered with paint balloons?
Miss Adelaide: I've seen the police station. It could use the color.
|“|| Buck Oliver: Nice...backpack.
Don Polehaus: Yeah, it is. I bought it because it matches the coffee stains on my shirt.
|“|| Don Polehaus: I'll check with you later, and get me that kid's spit.
John Whittaker: You have a way with words, Detective.
|“|| Unknown : Hello?
Don Polehaus: Uh, it's for me.
Unknown : Oh.
|“|| Don Polehaus: I became nasty because of guys like you.
Wally Haggler: I'm not who I was.
Don Polehaus: Sure you are. People don't ever change. Not really.
Wally Haggler: This one has.
|“|| Don Polehaus: Is there some place we can talk privately?
Penny Bassett: Oh. How about the Agora cafe downstairs? They have a private room. And I just LOVE their apple strudels!!
Don Polehaus: OK.
Benjamin Trask: Since Penny is my student, I ought to be there.
Don Polehaus: Suits me.
Penny Bassett: Oh, can Connie come with me? For moral support?
Don Polehaus: Sure.
Connie Kendall: Well, if I'm going, then Whit has to come too.
John Whittaker: Alright.
Don Polehaus: Anyone else? Maybe we should invite the whole class.
Penny Bassett: Don't be silly. There wouldn't be enough strudel for the whole class.
|“|| Don Polehaus: I once kidnapped a cow after hitting my head in a car accident, but that's another story for another time.
|“|| Don Polehaus: Stay close, Haggler. We're not finished with this.
Wally Haggler: Not by a long shot.
|“|| Don Polehaus: Nice work, kids.
Eugene Meltsner: Did you call me a kid?
|“|| Don Polehaus: And get rid of that toothpick! It'll stunt your growth!
|“|| Don Polehaus: I've seen it happen more times than Wooton can count.
Wooton Bassett: Six?
Don Polehaus: Exactly.
|“|| Don Polehaus: <to Whit> I think you need to get out of the sun.
|“|| John Whittaker: So, what's everyone having?
Connie Kendall: My usual.
Don Polehaus: I'll have my usual too.
Wooton Bassett: And I'll have both their usuals with extra whipped cream and a side of licorice.
Don Polehaus has appeared in the following albums:
- Album 53: The Green Ring Conspiracy (12 episodes)
- Album 54: Clanging Cymbals (1 episode)
- Odyssey Adventure Club: Season 1 (1 episode)
- Album 58: The Ties That Bind (6 episodes)
- Album 59: Taking the Plunge (1 episode)
- Album 60: Head Over Heels (2 episodes)
- Album 62: Let’s Put on a Show! (1 episode)