Got the idea from
Rive Gauche, so here goes:

Dear Ba-Ba-Ba-Ba-Ba-Ba-Batman,
Let me clue you in: YOU DON'T BREAK OUT JAIL AND LEAVE YOUR GIRLFRIEND IN, OR YOU'LL GET DUMPED!
Really dude; you're way too psychological.
Your fans are bored, baffled, or can't see that movie(that's me!).
Yours,
A-fan-who-finds-the-joker-creepy-and-boring
Dear Ironman,
Stick to one girlfriend!
You don't want what happened to Batman to happen to you, do you?
You are not that funny!
From
A normal person without a robot heart
Kick those bad guys' butt!
You are epic win, but your mask is epic fail!!
I'm expecting a lot more from the new series!!
You better not kiss upside-down in the rain,
Someone-who-doesn't-like-you

Dear Aqua Man,
Hope you drown!!
A mean person
Dear Fantastic 4
You are so boring!!
I hope the human torch falls in a pit of lava,
and Mr. Fantastic: I think they should kill you by tying you to a horse
and making it run off!!
I-don't-care
Dear Hulk,
YOUR MAKING ME ANGRY!
If I ever meet you, i'm gonna stick a pin in your butt!!
from,
I-want-to-get-crushed!
thanks for viewing!!!