John Herbert is an elderly pedohebephile who lives on Spooner Street with his old, crippled dog, Jesse. He has a high-pitched, very soft, effeminate voice and with a slight whistle lisp. He is often seen wearing a light blue robe and slippers and uses a zimmer-frame walker to get around. He is a retired United States Army veteran. He becomes fixated on Chris in "To Love and Die in Dixie" when Chris took up a paper route and developed an unhealthy obsession with him. When the family returned from the South, he left 113 messages asking what had happened to the paper boy. Herbert frequently seems to make inappropriate, sexually-tinged comments to teenage boys. It is revealed later on that he is the eldest member of the Skull and Bones secret society. He is shown to be Roman Catholic and goes to the same church as the Griffins in "Boys Do Cry".
Originally stated in the DVD commentary for "To Love and Die in Dixie" in Family Guy: The Freakin' Sweet Collection, he was going to be a creepy driver of a school bus that Chris was afraid to go near.
Herbert has a high voice and speaks with a whistle. According to Seth MacFarlane, Herbert was created when Mike Henry would use his voice to scold the writers when they had trouble coming up with new ideas for episodes. He admitted that it made him laugh every time and decided to adapt him as a character. Mike Henry had also said that the inspiration was a senior citizen that used to work with him at a grocery store.
Herbert is a retired United States Army veteran. He is seen in "Padre de Familia" at a Veteran's Day festival in Quahog Park in his dress uniform singing the song "God Bless the USA". In "German Guy" it is revealed that he served in the Army Air Corps during World War II, but was captured by the Germans, and sent to a concentration camp, because he was believed to be gay and was given hard labor by Franz Gutentag.
In "To Love and Die in Dixie", Chris is delivering newspapers to his house, and he tries to persuade Chris to come inside. At the end, he leaves 113 messages on the phone, and they are all about Chris.
In Stewie Griffin: The Untold Story, he is heard during the intermission asking, "Chris do you have a shower scene? Or do I have to keep dreamin'?"
In "North by North Quahog", he disguises himself as an eighth-grader and asks two boys to dance. Brian points out that he is "one ugly eighth-grader".
In "The Courtship of Stewie's Father", Chris breaks his window with a baseball, and Lois decides to pay for the broken window out of Chris's allowance. At Herbert's suggestion, Peter makes Chris do chores for Herbert. He later takes Chris out to dinner. At that point, he fantasizes about life with Chris. In his fantasy family, he and Chris have two children, a boy who resembles Chris, and a girl who resembles Herbert. In the last scene of the episode, he turns on the TV to an announcement of the Little League World Series. He perks up and responds: "Jackpot!"
In "You May Now Kiss the...Uh...Guy Who Receives", he does not sign Brian's petition for gay marriage.
in "Petergeist", he saves Chris from being eaten by a giant evil tree.
When Chris loses his paper route due to Superstore U.S.A. in "Hell Comes to Quahog", Herbert gets shot by the truck that's launching newspapers. He lays there moaning in pain along with Jesse, then proceeds to passing out snoring with the usual whistling.
After Lois and Peter come down to stop Chris from rehearsing loudly in the garage in "Saving Private Brian", he gets angry at them and leaves to loiter in the park. To get to the park, he jumps on a motorcycle driven by Herbert.
In "Whistle While Your Wife Works", he sends his dog Jesse out for a walk, and the dog attempts to eat Peter's finger, which was previously blown off.
In "Prick Up Your Ears", he is lined up to shake Stewie after he is shaken by Chris and Brian. Later in the episode, Stewie steals his dentures in the night while he is sleeping and dreaming about Fred Savage.
With no police in Quahog in "Barely Legal", Peter states that he had hired some homeless boys to pickpocket old, rich people. When they begin to shuffle through Herbert's pockets and clothes he takes pleasure.
Herbert can be seen in line at the Griffin's garage sale in "Road to Rupert". Approaching Chris, Herbert asks him if he is selling any clothes from the summer. Chris then tells Herbert that all he has fitting that description is a pair of shorts, to which Herbert replies "Sweet Jesus!".
After Stewie takes over Chris' paper route in "Movin' Out (Brian's Song)", Herbert noticed the new paper boy in which Stewie tells him to piss off and Herbert takes it as a challenge.
Herbert made an appearance in "Play It Again, Brian" in which Peter and Lois hire him to babysit the Griffin children because he's "watched" several children. While doing so he makes several attempts to seduce Chris, at one point trying to get Chris to bathe him; Meg does it instead, and Herbert exclaims "Rats!". Later he reads Peter and the Wolf to Chris as a bedtime story, changing the moral to suit his own means, and Chris asks Herbert if he's a pedophile... the reaction to this is not seen. During the closing credits, he is shown sleeping at the foot of Chris' bed, where the Evil Monkey tries but fails to threaten him.
In "Hannah Banana," Herbert sneaks into Chris' room at night to paint his portrait; this is shown in a fast-forward playback of a surveillance video set up to prove or disprove the existence of the Evil Monkey.
In "Big Man on Hippocampus," Chris believes he's invisible, running down the street naked as Herbert sees him off-screen.
In "April in Quahog", the world was going to an end. He said to Chris "My time of waiting is almost over" wearing only underwear.
Herbert heard a dirty joke in "The Splendid Source".
In "And Then There Were Fewer", he appears in his formal suit driving his ice cream truck both call backs to previous episodes. When they find the laundry room, Herbert says, "Mine is smaller", after Stewie says, "My secret room is bigger". He reveals that James Woods once replaced his medication with methamphetamine.
Herbert has an epic battle with his Nazi tormentor as a POW in "German Guy", after unsuccessfully attempting to warn Chris about him. The DVD animatic unofficially gives Herbert the first name of "John".
Herbert stares in shock as Chris swallows hot dogs in "Killer Queen".
Herbert lurks in the shadows of Chris' room in "Grimm Job".
An African version of Herbert appears in "Scammed Yankees". He appears dressed as Tom Tucker in "A Lot Going On Upstairs" when Brian tries to fool Stewie by dressing the family and neighbors as each other.
- FG312 "To Love and Die in Dixie"
- FG318 "From Method to Madness"
- FG401 "North by North Quahog"
- FG406 "Petarded"
- FG407 "Brian the Bachelor"
- FG412 "The Perfect Castaway"
- FG416 "The Courtship of Stewie's Father"
- FG425 "You May Now Kiss the...Uh...Guy Who Receives"
- FG426 "Petergeist"
- FG503: "Hell Comes to Quahog"
- FG504 "Saving Private Brian"
- FG505 "Whistle While Your Wife Works"
- FG506 "Prick Up Your Ears"
- FG508 "Barely Legal"
- FG509 "Road to Rupert"
- FG510 "Peter's Two Dads"
- FG511 "The Tan Aquatic with Steve Zissou"
- FG512 "Airport '07"
- FG513 "Bill and Peter's Bogus Journey"
- FG514 "No Meals on Wheels"
- FG515 "Boys Do Cry"
- FG516 "No Chris Left Behind"
- FG517 "It Takes a Village Idiot, and I Married One"
- FG601 Blue Harvest (as Obi-Wan Kenobi)
- FG602 "Movin' Out (Brian's Song)"
- FG603 "Believe It or Not, Joe's Walking on Air"
- FG604 "Stewie Kills Lois"
- FG606 "Padre de Familia"
- FG608 "Play It Again, Brian"
- FG611 "The Former Life of Brian" (DVD version only)
- FG708 "Family Gay"
- FG709 "The Juice Is Loose"
- FG712 "420"
- FG801 "Road to the Multiverse"
- FG803 "Spies Reminiscent of Us" (Mentioned)
- FG805 "Hannah Banana"
- FG810 "Big Man on Hippocampus (heard only)
- FG811 "Dial Meg for Murder"
- FG813 "Go, Stewie, Go!"
- FG816 "April in Quahog
- FG819 "The Splendid Source"
- FG820 Something, Something, Something, Dark Side (as Obi-Wan Kenobi)
- FG901 "And Then There Were Fewer"
- FG905 "Baby, You Knock Me Out"
- FG907 "Road to the North Pole"
- FG908 "New Kidney in Town" (mentioned)
- FG911 "German Guy"
- FG912 "The Hand That Rocks the Wheelchair"
- FG913 "Trading Places"
- FG918 It's A Trap! (as Obi-Wan Kenobi)
- FG1004 "Stewie Goes for a Drive" (Heard)
- FG1009 "Grumpy Old Man"
- FG1016 "Killer Queen"
- FG1021 "Tea Peter"
- FG1022 "Family Guy Viewer Mail No. 2"
- FG1023 "Internal Affairs"
- FG1102 "Ratings Guy"
- FG1104 "Yug Ylimaf"
- FG1110 "Brian's Play" (Uncensored versions)
- FG1112 "Valentine's Day in Quahog"
- FG1113 "Chris Cross"
- FG1116 "12 and a Half Angry Men"
- FG1117 "Bigfat" (special opening)
- FG1201 "Finders Keepers"
- FG1206 "Life of Brian"
- FG1210 "Grimm Job"
- FG1213 "3 Acts of God"
- FG1301 "The Simpsons Guy"
- FG1316 "Roasted Guy"
- FG1403 "Guy, Robot"
- FG1412 "Scammed Yankees" (African version)
- FG1413 "An App a Day"
- FG1413 "A Lot Going On Upstairs"
- FG1417 "Take a Letter"