Fungus? Oh, you've missed the drought! It would be more likely lichen.
Sadly I didn't actually see him (maybe it was a her?) so I can't say. At Portland's last World Cup there were exotic dancers who marched with a band of mostly drummers. Back and forth through the stands during the game, I figured it was more of the same. This was a different venue, I think. (Horrible turf.)
Anyway, it was quite fun, actually, once you get over the shock of half-nakeds nearby. The rhythms were great... what was that band?... it was said they are a fixture in Portland. I'll go look.
edit: I think these are the ones... Lions of Batucada