|“||Um, are you sure we're not going a tad overboard here?||„|
|~ Paul "Dibs" Plutzker|
|“||Ah... Carrigan. How kind of you to drop in. You know, if there's one thing I've learned from you it's: Always kick 'em when they're down. And, baby, you're six feet under. Oh, what a shame. Sorry, sweetheart. We're through.||„|
|~ Dibs betraying Carrigan.|
|“||Oh, you can haunt me all you want, but it's gonna be in a great big, expensive house with lovely purple wallpaper and great big green carpets and a little dog called Carrigan, a bitch just like you. I got the power! I got the treasure!||„|
|~ Dibs' last words before Carrigan throws him out of a window after his betrayal to her|
Dibs was portrayed by Eric Idle of the group Monty Python.
In Casper, Carrigan was furious to learn from her late father's lawyer Mr. Rugg that she had only inherited the manor in her father's will, rather than anything of significant value. Infuriated, she tossed the will and the deed into the fireplace, but it was rescued by her attorney and close associate, Dibs. Dibs discovered one of the will's pages had an inscription on it that described a treasure that was hidden in the manor. They both went to find the old Whipstaff Manor in a town in Maine.
Carrigan and Dibs visited the old manor, but found that it was haunted by four ghosts: Casper, a friendly but lonely young ghost and his three obnoxious uncles known as the Ghostly Trio: Stretch, Fatso, and Stinkie.
The two made several attempts to remove the spirits including hiring both a amateur exorcist named Father Guido Sarducci, and one of Ghostbusters (the cameo appearance of Dan Aykroid), but are unsuccessful.
Carrigan and Dibs met Kat and Dr. Harvey at the manor, and Carrigan ordered Dr. Harvey to remove the ghosts as quickly as possible. However, things were complicated when Kat and her father met the ghosts face-to-face; despite Casper's best efforts to befriend them, the two were terrified by both his appearance and the antics of the Ghostly Trio. They choose not to leave, however, and they stayed for the night.
Carrigan and Dibs followed Kat and Casper (who were friends), and learned that a special formula was used to run a machine called the Lazurus. That formula had the power to bring ghosts back to life, but there was only enough for one. Realizing that one opportunity to come back to life, Casper turned on the Lazarus and stepped inside. Unfortunately, the formula was stolen by Dibs and Casper was left disappointed. With the formula in hand, Carrigan and Dibs realized that, as ghosts, they would be able to fly through thick solid walls to retrieve the treasure, which was locked in a vault inside the underground lab, and then use the machine to come back to life. Unable to decide who should die, the two attempted to kill each other, which resulted in Carrigan falling off of a cliff and she died in the process.
Back at the manor, Carrigan, who was a ghost, stole the treasure chest from the manor's vault and ordered Dibs to revive her, but he refused and decided to have the manor and the treasure for himself, so she threw him out of the window. Little was known about Dibs after that, and he did not appear in the animated series. However, it was possible that the window that he was flung out was at a low part of the main section of the manor. Carrigan, on the other hand, was tricked by Kat and Casper into crossing over to the next world. If Dibs survived, he would have been unaware of Carrigan's ultimate fate.