Need a way to match a single word that has both letters and numbers in it.

[Aphris-Karu]

Using it for an ingame AI and some usernames have numbers in them example: "Joe32"

I want to catch the first word as it is always the user name. Using an _ will catch it only if the word has no numbers in it and using a # will only catch a number. Using a * will catch more than a single word and mess up the matches.