Detective Comics Vol. 1 (1937-2011; 2016-) #267

Plot

Preparing to go off on patrol, Batman and Robin find the Bat-Cave disturbed and meet Bat-Mite, an admirer of Batman's from another dimension. Bat-Mite wants to join Batman and Robin in their fight against crime, but Batman politely convinces Bat-Mite that that won't work. Instead, Bat-Mite tries to make Batman and Robin's exploits a little more entertaining, a little more "fun." In the end, Batman finds a way to make Bat-Mite useful, which lets the imp know it's time to go home.