It reminds me of
Sailor Moon. In the (reportedly rather crappy) English version of the manga (Japanese comic book), as well as several international translations, Sailor Moon's civilian name is
Bunny. This is a translation of her original Japanese civilian name,
Usagi ("rabbit" in Japanese).
I think
Bunny as a given name is very childish and cutesy, yes. But as a nn for
Berenice,
Bernice, or
Bernadette, I don't find it so bad.
Miranda
"Multiple exclamation marks are a sure sign of diseased mind" --
Terry Pratchett