Our BT Brutus came with the name when we adopted him. And since he is such a friendly and SO not a tough guy we thought it was funny to call him Brutus... (Et tu Brute!)
It took about a week after we got our pug/jack russell x before we could agree on a name. My husband wanted to name her Bambi

and I wanted to name her Skelli (after Skeletor

)... We had just watched the movie Ed Wood and Bela Lugosi (the old horromovie actor) was in it, and we loved how he'd say "Beeela", so we decided to call her (I know, I know poor thing is named after a dude!) Bela Lugosi, or just Bela for short...
Our BT/pug x was named Zoe when we adopted her, but she came from an abusive past and we wanted to give her a new start, so after almost a weeks debating we decided to stick with the monster theme and named her Wednesday after Wednesday Addams (daughter from the Addams family), plus she looks like a little gargoyle!
Wednesday, Brutus & Bela