1

"We've been de-aged, our hairs longer, we're in new clothes and our ears are pointed." I pick a bit of my suddenly very long hair, brushing an ear as I do and also bringing my tiny hand into sight.
"Huh... You think we're fairies now?"

or

Batfam go to the lotr world an become elflings!

(Barely canon compliant, I have not read any of the comics and I've barely watched anything of batman and the same goes with lotr, so unless it would help make the story better, please ignore anything I mention that goes against canon)

#21 - elfling