Frigde

Fridge Brilliance

 * Happy Tree Friends, Super Mario Logan and SpongeBob characters are usually dumb but other characters can be stupid and it's not out of character.
 * Kirby and King Dedede are often dumb because while they can be smart, they have put the world in danger when it's not intentional. The most famous example is Kirby's Adventure where both King Dedede and Kirby were in the wrong.
 * Bowser is also an idiot. Bowser has lead himself into his own demise and can be lethally stupid.
 * These characters come back to life and they all have explanation of it (or for some, at the very least die and come back in their own series).
 * The doctors in this series is dumb which is great for creative deaths.
 * This series may take place during the same period of the episodes and games of the official media. SpongeBob and Mr. Krabs are flanderized, The Sonic Movie episode came out when the Sonic Movie was recently revealed and there's references to past episodes and games of the official media.
 * Why is this violent with cute cartoon cartoons appearing in them. Because, as jtmoney says so many times, the characters aren't new to getting killed, let alone getting some guts spilled. Especially SpongeBob, the Happy Tree Friends and SML Cast, Kenny, Homer Simpson, Tom and even Jerry.
 * Why are the character literally ageless? Well last time I check, the characters have no age to begin with. Just look at SpongeBob. He can a man with a job and his own house in a episode and a kid with a naive personality in another. Also when's the last time these characters have any continuity in their respective series.

Fridge Horror

 * These characters are constantly fighting to the death in the series "versus". It's unknown why but they are willing killing each other. Sometimes it's for the stupidest things like Kirby fighting Om nom because Kirby has candy that he found and Om nom greedily stole it.
 * These characters can be soulless to deaths and can be selfish. Theirs even evil characters such as Fliqpy or Mr. Krabs.
 * Mr. Krabs himself is willing to kill his own employees for money.
 * King Dedede himself is an jerk but not evil but in Battle of the Multiverse, he's evil. He teams up with Fliqpy and The Devil and plots to kill Kirby and his friends.