The README file that comes with Baldur's Gate explains how to make your own custom portraits and sound schemes for your character. Now that I am on a new server, I can once again offer my custom portraits and sound schemes for download. Quality depends on my source, but they're fun even if not the best quality.
Click on the Portrait to hear that character's battle cry (if I've made a sound scheme for him/her). Click on the zip to download. (P zips are portraits and S zips are sound schemes)