Greg responds...

Both. We knew who Brooklyn, Lexington and Broadway were when we started. We knew there potential. We knew Lex was technology-minded. (There was a scene in Michael's original Awakening script where Lex admired a Viking catapult.
Unfortunately, it was cut for time.) We knew Brooklyn would develop into a leader. We knew he was a swashbuckler at heart, on the prowl for love and adventure. We knew Broadway was a sensitive soul, who valued others and could see their essence. I also knew that Broadway was illiterate. I knew that all three had and have a lot to learn about themselves and the world.
Still, knowing all that, a lot of their development was left to serendipity.
The voice actors helped steer their characters without trying. The artists did the same.
When Angela was first introduced, I didn't know who she'd wind up with. But while Gary Sperling and I were working on TURF, we decided that we needed to know. It became immediately obvious to us that although all three young warriors would pursue her (almost automatically), only Broadway would see her for who she really was. Not just a pretty gargoyle. Not just Goliath's daughter. But an individual with strengths and fears of her own. Notice that in TURF, Broadway is the only one of the three who never calls her "Angie". Though he was generally as lost in the competition as the other three, he was still sensitive enough to her body language to have ALREADY recognized that she didn't care for the name.
But I digress. Basically, we strived to evolve all the characters. Not just the Trio. Of course, the guy who changed the most was Xanatos. But even a mope like Vinnie got a chance to evolve. This was all very conscious. I took my lessons from the first five seasons of CHEERS. From HILL STREET BLUES, ST. ELSEWHERE and MAGNUM P.I. Shows like these really explore the potential of series television. What a waste not to take advantage of the format. I hate status quo television. Human beings change with time and experience, why shouldn't characters in series televsion, even if they are Gargoyles? It's very gratifying that you noticed and appreciated our efforts. Thanks.