Role in the series
In "The Great Honey Pot Robbery," Stan appears to be calm, devious and somewhat intelligent, while Heff appears to be loud, easily scared and idiotic. When the two are foiled by Roo (whom Heff thinks is a giant mouse) the first time, Stan decides to go to a friend of his named Wooster, a gigantic woozle who Stan and Heff lead to Pooh's house where "brunchfast" is about to start. Leading Wooster to Pooh is what Stan hopes will get he and Heff what they want, but when Pooh befriends Wooster and foils them a second time (just like the first time when Roo stopped them), Stan flees with Heff and vows that they will return and take their honey, one way or another.
In "A Bird in the Hand," Stan and Heff come up with a plan to capture Kessie and hold her for ransom (that being honey). After capturing Kessie and Rabbit and taking them to their hideout, Stan is the one who sends Pooh, Tigger, and Piglet a ransom note.
When they too are captured, Kessie convinces Stan and Heff to start taking care of them. Kessie's constant demands result in a flood of honey in the thieves' hideout and Stan's begging to take Kessie far away from them. This was his and Heff's last appearance.
- Heff mistakenly thinking Roo is a giant mouse is a reference to the Looney Tunes cartoons starring Sylvester and Hippety Hopper.
- Being a woozle and a heffalump, Stan and Heff fulfill the original idea that heffalumps and woozles were monstrous thieves that took honey without a second thought, as seen in the song and dream sequence "Heffalumps and Woozles" from Winnie the Pooh and the Blustery Day. Their motives (at least Heff's anyway, him being a heffalump) would be counteracted in Pooh's Heffalump Movie, in which heffalumps (especially Lumpy and his mother) are portrayed as kind, misunderstood quadrupeds who believed that Pooh and his friends were the real strange creatures that dwelled in the forest.
- Though there had already been heffalumps in the Hundred Acre Wood before, as seen with the heffalump family in the episode "There's No Camp Like Home" from The New Adventures of Winnie the Pooh, Stan is the first physical woozle to be seen in the Winnie the Pooh universe, with Wooster as the second. All other woozles seen up until that point were nightmarish depictions dreamt up by the characters. They would continue to be nightmarish figures after Stan and Wooster, due to the lack of anymore physical woozles.