Cartoon Network has released numerous popular shows throughout the years, many of which have also featured Halloween episodes. These Halloween episodes are often some of the most memorable and spooky stories in Cartoon Network series.

RELATED: 10 Cartoon Network Shows That Would Make Great Anime

Cartoon Network episodes and specials do a great job expressing the Halloween charm, complete with references to horror movies, monster mythology, and dark humor. For fans of cartoons, horror, and Halloween, rewatching Cartoon Network's Halloween episodes is a great way to celebrate the holiday and put others into the Halloween spirit.

10 Numbuh 4 Went Up Against Pirates

Codename: Kids Next Door

Image features Numbahs 1-5 from Codename: Kids Next Door

The Codename: Kids Next Door episode "T.R.I.C.K.Y." sees Numbuh 4 make a bet with his teammates to see who can bring in the most candy. While the episode doesn't focus too much on Halloween itself, viewers get to see Numbuh 4 go up against Captain Stickybeard and his pirate crew.

"T.R.I.C.K.Y." is an entertaining episode. Despite Numbuh 4's foolishness, he is still quite resourceful and doesn't give up very easily. Viewers also enjoyed the action scenes, which saw Numbuh 4 riding and crashing a giant pirate ship full of candy, making it a memorable Halloween episode.

9 Lumpus Thought He Was Going To Have A Quiet Halloween

Camp Lazlo

Lazlo Raj and Clam from Camp Lazlo

The Camp Lazlo episode "Hallobeanies" sees Scoutmaster Lumpus send the campers back home for Halloween. Lumpus hates dealing with children on Halloween, so he's happy to be rid of the campers. Unbeknownst to Lumpus, Lazlo and his friends decide to stay at Camp Kidney.

RELATED: 10 Cartoons To Watch If You Want To Get Into Cartoons

"Hallobeanies" is a nice change-up from the other Cartoon Network Halloween episodes because it focuses on an adult who hates the holiday. It's humorous watching Lumpus grow more frustrated as Lazlo and his friends keep asking him for candy. It's also a blast watching the cranky scoutmaster try to enact revenge by scaring the campers, only to keep getting hurt by cartoon gags like lightning.

8 The Characters Told Each Other "Scary" Stories

Regular Show

Mordecai and Rigby in Regular Show in the park

In the Regular Show episode, "Terror Tales of the Park," Rigby, Pops, and Muscle Man tell spooky stories to each other and their co-workers. However, it turns out that they're all bad at storytelling.

"Terror Tales of the Park" pokes fun at scary stories as the characters continuously include unnecessary elements, like an evil doll wanting to draw on people's faces or Rigby turning into a house. Funnily enough, depending on who's telling the story, the stakes actually feel less intense than when Mordecai and Rigby's daily shenanigans get them into world-ending trouble.

7 The Bears Turned Their Friend Into A Werebear

We Bare Bears

The Bears taking a selfie from We Bare Bears.

In the We Bare Bears episode, "Charlie's Halloween Thing," Charlie tells a couple of Halloween tales with the Bears and Chloe. Charlie's stories reference classic horror movies and tropes, predominantly killer dolls and werewolves.

"Charlie's Halloween Thing" actually shows the Bears' lives in danger as the dolls try to kill them with an ax, adding an element of nightmare fuel and a fun reference to The Shining. The episode also alludes to The Wolfman with Chloe's transformation into a "werebear," which comically makes her popular among her peers until she attacks them. Fans of cartoons and horror movies will find "Charlie's Halloween Thing" a worthwhile watch.

6 Bloo Went Up Against An Army Of Zombies

Foster's Home For Imaginary Friends

Foster's Home for Imaginary Friends

Foster's Home for Imaginary Friends has Bloo accidentally kill Mr. Herriman in "Nightmare on Wilson Way." Mr. Herriman becomes a zombie and starts turning everyone else into the undead. The episode is a bit predictable, but it has funny moments, such as Bloo going up against the zombie army. It also shows that despite Bloo's ego, he will still risk his life to save his best friend Mac.

RELATED: 10 Best Cartoon Villains Of All Time

"Nightmare on Wilson Way" includes countless references and nods to other shows and movies. The characters wear a variety of costumes that reference popular media such as The Powerpuff Girls, Willie Dynamite, and The Wizard of Oz.

5 Boo Haw Haw Has A Great Art Style

Ed, Edd, N, Eddy

Ed Edd n Eddy in the cartoon network show of the same name

"Ed, Edd n Eddy's Boo Haw Haw" is an entertaining special in Ed, Edd, n Eddy for its Halloween setting and colors. Ed, Edd, n Eddy already had great animation and visuals, but "Boo Haw Haw" gives fans a new look at creator Danny Antouncci's art style.

"Boo Haw Haw" exudes Halloween spirit with the Cul-de-sac's mix of orange and green colors and the characters' expressive costumes. Most importantly, fans got to see the world through Ed's eyes, complete with him imagining everyone else as wicked monsters. Although many fans dislike "Boo Haw Haw"'s ending, it is still a fun Halloween special to watch.

4 Gumball And Darwin Turned Into Ghosts

The Amazing World Of Gumball

Anais, Darwin, Gumball, and Carrie in a cemetery from The Amazing World of Gumball.

In The Amazing World of Gumball episode, "Halloween," viewers got to see Gumball and Darwin turn themselves into ghosts and explore a haunted house. Gumball and Darwin then have to battle against the undead to retrieve their bodies back.

"Halloween" has a fun subversion of the haunted house trope by turning it into a party filled with ghosts. The episode carries Gumball's trademark snappy humor and blends it well with an eerie atmosphere. The episode also heavily features the popular character Carrie Krueger, making her appearance a fun bonus for fans.

3 The Titans Turned Into Ghosts

Teen Titans Go!

Teen Titans Go! characters cheering in the street

In the Teen Titans Go! episode, "Scary Figure Dance," the H.I.V.E. Five accidentally turn the Teen Titans into ghosts. In response, the Teen Titans decide to have some fun by haunting them.

RELATED: Every Scooby-Doo Series, Ranked

"Scary Figure Dance" is entertaining with its references to other popular media such as Ghostbusters, Pac-Man, and even Edgar Allen Poe's poem, The Raven. It's a blast watching the creative ways the Titans torment the H.I.V.E. Five with their ghost abilities. There's also an entertaining musical sequence that homages Frankenstein.

2 Jacked Up Halloween Has Great Dark Humor

The Grim Adventures Of Billy & Mandy

The Grim Adventures Of Billy And Mandy

The Grim Adventures of Billy & Mandy is full of horror, monsters, and dark humor. However, the Halloween special, "Billy & Mandy's Jacked Up Halloween" manages to stand out in a series already full of spooky themes.

"Billy & Mandy's Jacked Up Halloween" introduces a fun antagonist named Jack O' Lantern, a headless jokester who vows revenge on Grim and the town of Endsville. The Halloween special also has great comedy, like Irwin's odd costumes and Billy leaving Grim to die. The episode's most memorable moment has Grim cut a man's head off, but luckily, it doesn't feel gratuitous or inappropriate for kids.

1 Underfist Is An Awesome Pilot

Underfist: Halloween Bash

Irwin, Fred Fredburger, and Hoss Delgado from Underfist: Halloween Bash

Underfist: Halloween Bash is a spin-off Halloween special of The Grim Adventures of Billy & Mandy, and manages to stand strong as its own entity. Underfist efficiently develops its side characters with the original series' dark humor, but the special adds some emotional character development.

Underfist: Halloween Bash focuses on fan-favorite characters and develops them. Irwin, Jeff the Spider, Fred Fredburger, General Skarr, and Hoss Delgado form a new fighting team and receive character arcs. The special is also full of Halloween themes, dark humor, and great action sequences. Although Underfist didn't get picked up for a full series, it absolutely deserves one.

NEXT: 10 Cartoons That You Didn't Know Had Video Games