Jim Henson Company Lot (then Kling Studios), Hollywood, California (1957-1963) 3400 Cahuenga Boulevard West, Hollywood, California (1963-1998) Sherman Oaks Galleria, Sherman Oaks, California, United States (1998-2001)
William Hanna Joseph Barbera George Sidney
Hanna-Barbera Productions was an animation studio that impacted and dominated television since it was founded in 1957 by William Hanna, Joseph Barbera and George Sidney. It was a good animation studio in 1957-1969 and 1981-2001. However, it wasn’t always good, as, from 1970-1980, the studio went downhill.
The studio suffered a downfall in quality as they were infamous for doing some bad spin-offs during this era (a.k.a. the Dark Age of American Animation).
During those years, the studio, much like every other television animation studio in the United States, was severely hampered by heaps of restrictions and regulations from parent groups such as the ban on violence in children's television in the 1970s, which consequently causes the studio to severely struggle in coming up with fresh and new ideas that are good and entertaining to audiences in most of their cartoon shows. In short, interference from parent groups of the 1970s was the reason that made Hanna-Barbera and television animation, in general, go downhill in the 1970s. Even Hanna-Barbera themselves were not satisfied with many of the bad cartoons they churned out during this era.
They had some bad cartoons during these years such as
Josie and The Pussycats in Outer Space
Goober and the Ghost Chasers
The Partridge Family 2200 A.D.
The Tom & Jerry Show
Fred and Barney Meet The Thing
The Fonz and the Happy Days Gang
The animation in their shows (except the good ones during this era) was very limited, cheap, and produced on a very low budget.
Most of their shows during this era were made just to cash in on the success of another show. While nobody asked for these shows, they were just made no matter what.
They recycle most of their shows with space and other junk, which has little to nothing to do with the original show of these spin-offs to the point of being the poster children for Recycled In Space. The Partridge Family 2200 A.D., and The Fonz and the Happy Days Gang are prime examples.
There are also useless characters, the main example being the sons of the main characters.
The bad shows have a poor grasp on the source material, with The Tom and Jerry Show being the worst offender as it is practically nothing like the original Tom and Jerry cartoons they were based on.
The bad cartoons are heavily outdated nowadays.
They have created some shows (good or bad) that were cloned from Scooby-Doo during this era, such as Goober and the Ghost Chasers, Captain Caveman and the Teen Angels (despite being good), Jabberjaw, Josie and the Pussycats, Speed Buggy, and many others.
They were still notorious for constantly recycling elements from their previous works for other works such as plots, character designs, names, and especially animation and music scores.
Not to mention that they flanderized some characters
They still had plenty of good/decent shows during this era, such as:
The Banana Splits Adventure Hour
The Perils of Penelope Pitstop
Dastardly and Muttley in Their Flying Machines
Scooby-Doo, Where Are You!
Josie and the Pussycats
The Pebbles and Bamm-Bamm Show
Help!... It’s the Hair Bear Bunch!
The Funky Phantom
The Amazing Chan and the Chan Clan
The Addams Family
Wait Till Your Father Gets Home
The Flintstone Comedy Hour
The Roman Holidays
The New Scooby-Doo Movies
Butch Cassidy and the Sundance Kids
Inch High, Private Eye
Hong Kong Phooey
These Are the Days
Valley of the Dinosaurs
Wheelie and the Chopper Bunch
Korg: 70,000 B.C.
The Great Grape Ape Show
The Mumbly Cartoon Show
The Scooby-Doo Show
Dynomutt, Dog Wonder
Fred Flintstone and Friends
Captain Caveman and the Teen Angels
Yogi's Space Race
The All-New Super Friends Hour
The Hanna-Barbera Happy Hour
The All-New Popeye Hour
Casper and the Angels
The Robotic Stooges
Challenge of the Superfriends
Jana of the Jungle
The New Fred and Barney Show
The New Semoo
The Super Globetrotters
Scooby-Doo and Scrappy-Doo (1979)
The World’s Greatest SuperFriends
Amigo and Friends (English dub of Televisa’s Cantinflas y Sus Amigos);
Hanna-Barbera’s World of Super Adventure
The Flintstone Comedy Show
Scooby-Doo and Scrappy-Doo (1980)
Some of their bad shows are "so bad, they're good", such as The Fonz and the Happy Days Gang and Fred And Barney Meet The Thing.
The animation is still good at times, mainly in the good shows of this era.
Some of the shows use the Laugh Track for every episode, which is entertaining.
Many of their good series have a strong sense of humor.
There are still memorable characters in their good shows, like Fred Flintstone, Barney Rubble, Pebbles Flintstone, Bamm-Bamm Rubble, Yogi Bear, Boo-Boo Bear, Ranger Smith, Dick Dastardly, Muttley, Zilly, Klunk, Penelope Pitstop, The Ant Hill Mob, Sylvester Sneekly/The Hooded Claw, Scooby-Doo, Shaggy Rogers, Fred Jones, Daphne Blake, and Velma Dinkley.
There are also memorable new characters that were created in these years like Scrappy-Doo, Jana, Dr. Ben Cooper, and Montaro.
Speaking of which, by that time the studio would later create an animated reboot/revival of The Addams Family in 1992, which is far superior to the previous The Addams Family cartoon series the studio previously did in 1973.
To be fair, the studio wouldn't have suffered almost all these problems as mentioned in "Bad Qualities" above if it weren't for the interference of parent groups in the 1970s.
The Italian dub of their shows is positive and underrated.