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

Billy is one of the major characters from The Grim Adventures of Billy and Mandy who is the owner and friends of Grim along with Mandy, he is voiced by Richard Steven Horvitz.

Why He Sucks
NOTE: This is only focusing on the seasons 5-6 version of him.
 * 1) He is incredibly annoying and much more stupider unlike he usually is.
 * 2) He along with Mandy are huge bullies towards Grim.
 * 3) He is a much bigger nuisance towards everyone, mainly General Skarr.
 * 4) It is revealed that he poops in General Skarr's garden and eats his flowers.
 * 5) He does much grosser things than he used to do.
 * 6) He was at his worst on "Everything Breaks" where he says that he smashes stuff just because he thinks it's fun.
 * 7) He was much meaner to Jeff on "Billy & Mandy: Wrath of the Spider Queen" where he refuses to have Jeff marry Velma and calls Velma ugly.
 * 8) He refuses to follow Grim and Mandy's orders.
 * 9) He also acts like a huge jerk towards Mandy at times as well, despite the fact that they’re friends.
 * 10) On "Be A-Fred, Be Very A-Fred" he blames Grim for making Fred Fredburger cry when it was actually his fault along with Mandy.
 * 11) He along with Mandy barley get punished for their actions.

Redeeming Qualities

 * 1) He was much better in seasons 1-4.
 * 2) There were still moments where he cares about Grim and Mandy.