I've added both Zonk and Big Man to the H.E.R.O. page of my website. Both are bricks, although each also has an unusual power. Big Man is more of the standard, serious hero of Metrocity. Zonk is a clownish guy who may not be entirely (at all?) sane.
Both came out generally like I envisioned, especially Zonk - who just looks crazy.
Here's one pic of each, although there are sixteen of each on my main site:
'Til next time...