History Nerd Mode ON:
Actually Bek is a real name from Ancient Egypt. I only know this because a couple years ago I was working on a webcomic featuring Egyptian warriors and found a convenient list on Wikipedia and grabbed a couple of names including, just by coincidence, Bek. I was amused to see the name come up again when reading about the movie.
And, if you're curious about the comic, check it here: http://adrift-comic.tumblr.com