Bat-Mite (Fifth Dimension)

"I'd rather be with fuckin' Bat-Mite than you. Who's Bat-Mite? He's a two-foot-tall inter-dimensional Imp who stans Batman. I'd rather be with him. Is that a real guy? Yeah."

- John Economos and Christopher Smith

Bat-Mite is a fifth dimensional imp who idolises Batman.

Idolising Batman
Bat-Mite was born in the Fifth Dimension. At some point, he became obsessed with Batman and travelled to Earth-1 to meet him.