In his youth, Lahey was an idealistic police officer, but since his wrongful dismissal as a result of a prank by Julian, Ricky, and Bubbles on Halloween 1977, he degenerated into a bitter alcoholic.
Randall, commonly referred to as Randy and Bobandy (pronounced: BOH-bandy) (played by Patrick Roach), is Jim Lahey's devoted assistant trailer park supervisor.
Their relationship began in 1997 when Lahey's then-wife Barbara found Randy turning tricks for cheeseburgers while calling himself "Smokey" and wearing a cowboy hat.
In the seventh season, Randy becomes a frequent user of marijuana and goes into business with Phil Collins, operating an RV/food truck producing hamburgers, which are called "Dirty Burger"(s).
Ricky explains (to the camera) that, after he was almost killed near the end of the tenth season, Lucy gave him an ultimatum: stop partying completely, or she would leave.
Although Julian genuinely cares about their well-being and seems to be more patient with them, Ricky is the total opposite and is abusive towards them and treats them shabbily, frequently blaming them for what goes wrong - no matter who or what is actually at fault - while demanding cigarettes.
After spending all the money the Boys earned on a lucrative drug deal at the end of Season 4, Cory and Trevor, fearing for their safety, get a restraining order against Ricky.
Cory and Trevor help the Boys fend off an attack by Cyrus and his partners at the end of Season 5, but suffer gunshot wounds and get sent to jail along with Ricky and Julian.
When they are not helping the Boys, Cory and Trevor will either be spending time playing video games, working for J-Roc, looting vehicles, or running the local trailer-park shop with Sarah.
In season 7, in exchange for helping Lahey frame officers Green and Johnson for police brutality as revenge for trying to kill him, Ray has his DUI records erased and is able to resume his old job as a truck driver.
In the seventh season, Jacob is revealed to be the son of Philadelphia Collins, and takes a more active role in the show, and eventually acts as a replacement for Trevor while working with Cory.
During this time, after Cory and Trevor were committed to a mental hospital, the Boys recruit Jacob and a couple of his classmates to help them on a marijuana smuggling scheme in league with Sebastian Bach.
But due to financial hardships, her home was foreclosed on and she had to move into the park supervisor's trailer just after Ricky lost the job to Jim in a wrestling match.
J-Roc and the Roc-Pile often help Ricky and Julian with their money-making schemes, usually by acting as their fence or providing them with extra manpower unless it involves gunfights, at which point they refuse to partake.
Seems to have been killed off some time after season 5 (when his character is no longer seen or mentioned again), as during "Say Goodnight to The Bad Guys" members of the Roc-Pile are seen wearing shirts that say "RIP DVS" when talking to Randy and Julian about the single's dance.
J-Roc and the Roc-Pile often help Ricky and Julian with their money-making schemes, usually by acting as their fence or providing them with extra manpower unless it involves gunfights, at which point they refuse to partake.
He has also dabbled in the amateur pornography business, directing at least five straight-to-video titles, including "From Russia With The Love Bone", "The Bare Pimp Project", "Cheerie-Hoes", "Fire Hoes", and "Greasy Trailer Park Girls Gone Wild".
However, beginning in the ninth season, J-Roc raises another illegitimate son of his, a mixed race boy who often acts disrespectful towards his father due to him being white.
His favourite food seems to be greasy hot dogs, and several characters have insultingly called him a "caveman" for his general resemblance to a stereotypical Neanderthal; Sam will become hostile whenever this happens.
In season 7, he sends secret-admirer love letters to Barb Lahey; in episode 7 he reveals himself as her secret admirer and she leaves Jim to elope with Sam.
However, in Season 10 he becomes fairly wealthy, waving off crime from a promise he made after his mother died, inherits money, and owns a Dentist's building called "The Denture King" which the boys rob as well.
In season 7, Green and Ted Johnson attempt to murder Lahey (who was reinstated as a police officer) after he declines to file a search warrant that would have implicated J-Roc and Julian for stealing luggage at the airport.
Coaxed by Randy, Lahey reluctantly hires him as an assistant trailer park supervisor, and Green uses his position to investigate Ricky, Julian, and Bubbles for their criminal activities.
He re-appears in the final special "Say Goodnight to the Bad Guys"; after attempting to steal money and dope from the boys, he is sent back to jail for violating his probation.
Others have nicknamed him "Lord Of The Onion Rings", "Mustard Tiger", "Bologna Tugboat", and "The Human House"; J-Roc referred to him as "that snuffleupagus, walrus-ass manatee Phil Collins".
Donny (voiced by Mike Smith, portrayed by Dino Ninos) is a previously-unseen trailer park resident who frequently screams profanity off-camera, usually in reaction to the Boys' antics.
Ricky has known them since childhood, but Julian and Bubbles don't like them much because they abuse their grandmother's trust; also, they habitually stroll around the house wearing only bathrobes and not keeping their private parts covered.
Levi (Ardon Bess) and Desiree (Sandi Ross) are an aging couple, seemingly the most prosperous people in the trailer park, who appear in season 1.
She also helped drag Mr Lahey and Randy out of Sam Losco's veterinarian's office in Season 4's episode 5, "Conky" after they had been shot with tranquilizer darts.
Ricky and friends came up with a plan to deceive Green and Robin by putting dog urine on their groin areas and say "they were drunk as fuck, and passed out pissing themselves."