I'm not so sure Binegaa becoming "Ozzie" in the US version was a mistranslation so much as a mispelling.

I always assumed the names of Ozzie Flea and Slash were a reference to 3 rock 'n roll performers. Flea plays bass for the Red Hot Chili Peppers and Slash was a guitarist for Guns N' Roses. I assumed that "Ozzie" was supposed to be named for Ozzy Osbourne, lead singer for Black Sabbath, and more recently, "the dad" on MTV's The Osbournes.