It seems that Skinny Mack, now called Spike, is Bulk's nephew. No clue on who his mother is. I don't know neither if Paul S. will be full-time cast member, seeing by what he said on Facebook about coming back and forth to New Zealand, I guess Bulk will be a special guest star, appearing time from time.
And for whoever thinks this is a fan film, it is legit:
UPDATED 2/1/11 9AM EST
Felix Ryan (Spike) says:
Well what we decided was that Bulk is my uncle, and Skull is my father.
UPDATED 2/1/11 5:30PM EST
This hilarious spoof of James Lipton's Actors Studio.