The Grim Adventures of Billy & Mandy (seasons 5 & 6)

The fifth and sixth seasons are the last two seasons of Cartoon Network's The Grim Adventures of Billy & Mandy, which was created by Maxwell Atoms in 2001 as segments along with Mh:besttvshows:Evil Con Carne on Grim & Evil before becoming its own stand-alone spinoff in 2003.

Unfortunately, while the first four seasons were well received, the same can't be said for the last two seasons.

Bad Qualities

 * 1) These seasons lack the charm and cleverness of the first four seasons.
 * 2) *On that topic, Billy and Mandy's personalities have been ruined because of flanderization:
 * 3) **Billy has turned from a dimwitted, yet happy-go-lucky boy with a hilarious personality into a downright troublesome, obnoxious psychopath who keeps annoying everyone.
 * 4) **Mandy has turned from a cynical, yet calm girl with a charming personality into a downright mean-spirited, short-tempered bully who aspires to rule the world.
 * 5) *Besides that, the writing downgraded from being creative to being much more nonsensical and catastrophic than it already was, resulting in many bad episodes such as:
 * 6) **"The Love That Dare Not Speak Its Name"
 * 7) **"Scary Poppins"
 * 8) **"Spidermandy"
 * 9) **"Everything Breaks"
 * 10) **"Waking Nightmare"
 * 11) **"Beware of the Undertoad"
 * 12) **"Detention X"
 * 13) ** "The Incredible Shrinking Mandy"
 * 14) **"Heartburn" (which ended the series on a sour note)
 * 15) The humor is much more stale, repetitive, disgusting, and mean-spirited than it already was as well.
 * 16) Likewise, there are many more politically-incorrect and offensive stereotypes unlike the first four seasons, such as Asians, African-Americans, and Mexicans.
 * 17) *Irwin's great-grandfather Pharaoh King Popen Locken, in particular, talks in a stereotypical Jewish accent.
 * 18) Its crossover with Codename: Kids Next Door, "The Grim Adventures of KND", wasn't that great and has several plot holes, one example being the characters being too stupid to realize that Mandy is disguised as Numbuh 1.
 * 19) Like The Wacky World of Tex Avery and George of the Jungle (Season 2), these seasons have many more questionable and disturbing scenes than the first four seasons had.

Good Qualities

 * 1) Without these seasons, we wouldn't have one of the most memorable characters, Fred Fredburger.
 * 2) Grim, Irwin, Jeff, Nergal, Nergal Jr., and Hoss Delgado are still tolerable characters. Grim is also less of a punching bag. Additionally, there are still tons of hilarious moments from time to time.
 * 3) There are still some good episodes such as:
 * 4) *"Keeper of the Reaper"
 * 5) *"Modern Primitives"
 * 6) *"Billy & Mandy vs. the Martians"
 * 7) *"Goodbling and the Hip-Hop-Opotamus"
 * 8) *"Company Halt"
 * 9) *"Billy & Mandy Moon the Moon"
 * 10) *"El Dia de Los Muertos Estupidos"
 * 11) The animation, art style, and character designs are much better than before, which is a major plus for these seasons.
 * 12) The three made-for-TV films, Billy & Mandy's Big Boogey Adventure, Wrath of the Spider Queen, and Underfist:Halloween Bash, were good.
 * 13) *Underfist: Halloween Bash, in particular, ended the Grim & Evil franchise on a high note.

Trivia

 * Underfirst: Halloween Bash was going to be the setup for a new series spin-off of Grim & Evil, but the contract of Maxwell Atoms with Cartoon Network expired before moving to Disney Channel for the TV series Fish Hooks, and the special was ultimately the finale of the Grim & Evil franchise. The special did not become a series due to the fact that Cartoon Network’s president at the time Stuart Snyder chose to focus on new ideas, which included live-action. This move resulted in long-time creators for the network such as Atoms, Mr. Warburton, and Craig McCracken leaving the network. Years later, it was revealed by Atoms himself on his Tumblr account, that he was actually fired from Cartoon Network by Michael Ouleween, claiming that Billy and Mandy destroyed the Cartoon Network brand with his show.