I got kid muscle taking his old man out in the series two pack visiable and kid taking the old man out hidden in the series four pack.
Perhaps it won't be so easy for us to all get a complete set of 60 figures after all.
anybody have any idea if the hidden figures are random or is there a set layout?
They seem to be an established layout... I think my sets were the same. I just got another series 4 tonight, and it had Kid vs. King Muscle hidden as well.
I also found CCG packs featuring Kid Muscle on the packaging. In case you're wondering, the sets are the same as those with Terry... the same series 1 figures and cards.