...if you live in Sweden.
"...Metallica may work as a name for a heavy metal band, but a Swedish couple is struggling to convince authorities it's also suitable for a baby girl.
Sweden's tax agency rejected Michael and Karolina Tomaro's application to name their 6-month-old daughter after the legendary rock band.
Although little Metallica has already been baptized, the Swedish National Tax Board refused to register the name, saying it was associated with both the rock group and the word "metal."
In Sweden, parents must get the names of their children approved by the tax authority, which is in charge of the population registry and issues personal identification numbers, similar to Social Security numbers in the United States..." (source)
Until last month I had no idea that baby names had to be approved by so many governments...the possibility had never even been a consideration.
No, I'm not going to mock the couple's names choice (it's still better than Danny Jr, Mikey Jr and Stevey Jr. IMO) ;)