League of Legends (LoL) Question: What are some fun or brainless champions?

Garen. Q>E>W away. R when they're low on health. Build the recommended. Wallah.

Brainless? Or just plain boring to play?

Both come up to Caitlyn either way.

Teemo!!!!!!!! (does require some micro/positioning though)

I like the good ol' Gangplank when i'm bored, he's hecka easy to play and it's always fun to kill carries in one single Q late game :p

Other braindead champ i can think of : Garen, Darius, Ryze, Tryndamere, Warwick.

Garen, Q-W-E-run or Shen E-Q-W are both pretty easy champions to master that dont really have too much neccesary variation in playstyle. Yorick is another person although he isnt exactly 'fun' to play, but he even more certainly isnt fun to play AGAINST.

Fiora. I used to think she would be boring as hell, then I played her...

BRAUM IS A BRAINLESS CHAMPION WELL HE IS A SUPPORT THAT'S THAT GOOD BUT.....BUT!
he is a pretty stupid champion looking at his skills e-w or w-e to defend ally then q to slow then stun is actually not bad but r what da hecks wrong with! rumbles equalizer is better he just knocks them up into the air then walla! yasuo ult! what no yasuo! then **** dat ult useless no damage when mo yasuo!pfttttftft=>

Anivia's got a bit of a learning curve but is extremely mindless once you get used to her. Same combo in nearly every situation, very easy mechanics, and she's still relevant even if she gets a little behind with all of her utility.