I imagine him as an old man with a huge potbelly, standing out in his front lawn waving his cane and yelling at kids skateboarding on the sidewalk...
The only time I've seen HG was a video of him and some friends riding on ATVs in a circle while shooting bottle rockets at each other. Not old or fat, but apparently not all there either. I don't know where I found that. Perhaps it was on his personal page for a while.