[timelesssymphony]

The use of the — is mainly to elongate a sound in Katakana but we can use an example from my favorite hanshin tigers to show it can be used sometimes at the description of the user, There was a good foreign player named Randy Bass who's last name would be バス in Katakana, well this is also how you say Bus and since the tigers are sponsored by the Hanshin railway company they decided to spell his named バ—ス to avoid newspaper headlines like "unstoppable bus", or "bus crashes" which may reflect poorly on Hanshin. In my own name it depends on how you want the emphases my bank card insists on using バ—グ— while I prefer to use just バ—グ which sounds closer to my English pronunciation.