Here's another DC piece I found online featuring one of Jack's more obscure characters: Funky Flashman. From Who's Who: The Directory of the DC Universe (1985), art by Kirby and Bill Wray. Many have suggested this was a piece of satire poking fun at Jack's previous editor Stan Lee, and Stan's assistant Roy Thomas.
Note Funky without his toupee reading a book called How To Be Lovable, and Mr. Miracle's disgusted expression.