Oh man, there are so many good ones. Here there are a ton of theme songs.
Hulk's '66 one is hilarious
Doctor Banner, belted by gamma rays, turned into the Hulk. Ain't he unglamo-rays!
All the 60's-70's and early 90's songs are pretty funny.
One for Doom to Pearl Jam's Do the Evolution.
I'm the head
of my land
Bow to me or feel my wrath, yeah
I'm a threat
To the world
'Could take it over a-gain just like that, yeah
It's domination, baby
I'm a beast, but a man
Buildin' clones to take out my trash, yeah
Designing tech... tears up Reed's
Arrogance my only path to defeat, yeah
I am your savior
It's domination, baby
Admire me, worship my word
Fear my name
Join my herds
This realm is mine
a matter of time
probably give it up
bored out of my mind
I could only get half way through the song before I started wondering what the heck I was doing.
Now here is THEEE ONE THEEE ONLY JOKER.
Hit the kids and kill the cops, thats what Joker likes to do. Robbed the banks and shoot the men for laughing out of line. I do these things to make Batman laugh, because we are pals.
He locks me in Arkham, and thows away the key, Knowing all 2 well, I be starting other body count.
or
Joker, Joker, take a toxin chemical bath.
bleach his skin, pure white, Turn his hair, Dark green.
But what look at that smile.
He kills people, just to get a few laughs, oh yeah. Thats the Joker.