Okay, as previously mentioned, the Martian Manhunter went from weird to weirder when he left Detective Comics for House of Mystery.
Now, I know you all think I'm INSANE ("Mad! So, my colleagues think me mad, eh...?!") for harping on the insidious evil of SURREALISM lurking with comic books, yet surrealism is exactly the new foe that J'onn was pitted against.
There was a certain bizarre logic to it. No one ever had any idea what to do with this ridiculous Martian character they'd cobbled together out of breakfast martinis, deadlines, and old pulp sci fi mags. For that matter, no one ever has. Might as well have him fight equally bizarre and ridiculous 'foes', in a symbolic struggle of classic art versus surrealism, or as a metaphor for humanity's never-ending efforts to impose meaning on a chaotic world. Who better to thrust in unknown and nonsensical territory?
J'onn was no longer fighting crooks in ties or even crooks in stupid costumes.
Now he fought things like...
evil sentient orchestras.
Or bank-robbing genies.
Or really peevish, bioelectric Fruit Loops
Or presidential candidate Pat Paulsen.
But it was all a battle against SURREALISM, in a vain attempt to keep its madness confined to the canvas...
See? And you think I make these things up...!