- Ace was voiced by Jeff Bennett.
- Snake was voiced by Tom Kenny.
- Grubber was voiced by Jeff Bennett.
- Big Billy was voiced by Jeff Bennett.
- Lil' Arturo was voiced by Carlos Alazraqui, later Tom Kenny.
The Powerpuff Girls
According to "The Powerpuff Girls Movie", the Gangreen Gang are the first villains the girls ever encountered. Later, they are also the first villains (aside Mojo Jojo) the girls fight after they are welcomed as superheroes. This is when the gang is robbing an old lady who was shopping and eating her groceries. Then after being fought, they are put in jail with Mojo Jojo and Fuzzy Lumpkins.
See Me, Feel Me, Gnomey
The Gangreen Gang appeared in the rock musical episode See Me, Feel Me, Gnomey, where (like other villains) they are causing chaos and terrorizing people in Townsville and the Powerpuff Girls when they arrive, they defeated them succeed. Only Ace sings a line (solo). Yet, when it comes to the Gnome, he is responsible for eliminating all the villains, but later, when the Gangreen Gang and all the villains revive, the Gnome loses power.
They are also seen along with all the other villains singing "Why Can't We All Get Along?".
They are a tribute to the work of late cartoonist Ed Roth, particularly Rat Fink.
Ace D. CopularAce sports a long, straight, greasy, slick-back hairdo, a scraggly mustache, a blue-orange colored vest-jacket, a pair of shades, and even fangs.
When he speaks, he sounds like the typical juvenile delinquent — mean, obnoxious, and disrespectful. He has a nasally Italian New Yorker accent.
As the Gang's smartest member, he is the instigator of most of their antisocial activities, and he does possess a certain charismatic charm that allows him to sweet-talk people who ought to know better, such as Ms. Keane and even Buttercup in the episode Buttercrush. His full name is Ace D. Copular.
In "Power Lunch", he had cryokinesis (referencing his coolness), the ability to generate ice and snow, similar to Blossom's ice breath. He is also the best looking one of the gang.
He was voiced by Jeff Bennett, who also voiced Big Billy and Grubber.
SnakeSnake is the closest friend of Ace and the overall second-in-command of the Gang. He has shoulder-length greasy black hair with black lips, pointy nose, skinny body, a Kangol hat turned backward, and a snake-like voice. Ace sometimes punches Snake if Snake says something out of line.
In "Power Lunch" his special ability was stretching long distances and strangling people like a real snake. His real name is Sandford D. Ingleberry.
He was voiced by Tom Kenny.
Big BillyBig Billy is a hulking big fat colossus with a shock of red hair covering the top half of his face, and a single big blue eye who acts as the Gang's muscle. Big Billy's height is 6'11", helping add to his position as the muscle man of his friends. Though he does at times display a childlike innocence, he mostly just does the bidding of his more savvy, ruthless, and vindictive friends. In the episode "School House Rocked", it is revealed that his real name is William W. Williams and that he is a Cyclops.
Big Billy loves to eat and will gobble more junk than the rest of the gang. In one episode, he was saved by the Powerpuff Girls and began following them everywhere out of sheer gratitude, but eventually, he became more of a hindrance than a help and he returned to the gang, in which they plan on getting revenge on the Powerpuff Girls, even almost killing them. In "Power Lunch", he can transform into a rock, referencing his intelligence.
He was voiced by Jeff Bennett, who also voiced Ace and Grubber.
Lil' ArturoA malevolent Mexican midget with straight hair swept forward over one eye, Li'l Arturo seems to take the most amusement from the Gang's activities.
He sounds very much like Señor Wences. He carries around a switchblade-styled comb he refers to as his daughter and calls "Maria". He has a rather prominent underbite. His full name is Arturo De La Guerra, which is Spanish for "The Art of War", a reference to the work of Chinese philosopher Sun-Tzu. He is the smallest of the Gang. In "Power Lunch", his superpower is super-speed, referencing his energetic personality.
GrubberGrubber is physically the Gang's most grotesque member - untidy hair, an enormous chin, ragged, grubby clothes and no shoes, a long tongue hanging out, and protruding eyes, resembling an Ed "Big Daddy" Roth cartoon. He also appears to be mostly mute, communicating instead of blowing a raspberry. However, he does occasionally demonstrate unexpected talents, such as playing the violin, speaking eloquently or performing impersonations (at first, they were so obvious it was a wonder how he fooled anyone, but later he was able to do them perfectly), and appears to be smarter then he looks. His full name is Grubber J. Gribberish. In "Power Lunch", he can do loud and supersonic belches, referencing his rebarbative and grotesque nature.
He was voiced by Jeff Bennett, who also voiced Big Billy and Ace.
- In The Powerpuff Girls Z English dub, Snake is female. Snake is known as Ivy in the English dub. However, in the original version, Lil' Arturo is female and Snake is male.
- Their name is a pun on the word "gangrene", which they supposedly suffer from despite not dying.
- Ace, Snake, Grubber, and Lil' Arturo has black hair while Big Billy has red hair.
- In the episode "Telephones", they were beaten up by Mojo Jojo, HIM, and Fuzzy Lumpkins for making prank calls to the girls which left Mojo, Fuzzy, and HIM at the receiving end of their fists when they were simply reading, taking a bath, and exercising, respectively.
- Snake and Arturo are voiced by Tom Kenny, who is known for his voice work on many cartoons, including providing the voice for SpongeBob Squarepants, Gary the Snail, and Volcano Sauce Drop, as well as the Ice King from Adventure Time, and even The Narrator in The Powerpuff Girls.
- Ace, Big Billy, and Grubber are voiced by Jeff Bennett, who was a very prolific voice actor known for his impressions of the legendary actors, Tim Curry and Christopher Walken. He is also known for providing the voice Dexter's father in Dexter's Laboratory, Peppermint Larry in Flapjack, and provides many voices for characters in Regular Show.
- With the revelation in The Powerpuff Girls Movie that the Gangreen Gang were the first villains the Girls ever encountered, it's unknown why the girls didn't recognize them in "Buttercrush". Considering that they were terrified and lost and that their encounter was short, it can be possible that they simply forgot them, but unlikely as after that encounter, they found them again after saving the city and send them to jail. The most likely explanation is that as the movie was made long after the episode, their first encounter in the movie wasn't canonical at that time.
- As of their music video "Humility", Ace officially become a member of the virtual band Gorillaz, serving as a replacement for the original bassist Murdoc Niccals while he was in prison. Ace is now 37 years old as of said video.