Same as a few of you, I bought one for my grandson a few years back.  My wifeand I had three daughters and the notion of buying the set never came up.  Now that I've got some grandsons I 've been buying them some of the wish list stuff from when I was a kid.  On the set I bought him, it was nearly impossible to get the blue robot's head to jack up, so he was always the winner.  I'd always volunteer to be red so that the the little guy would win - but after getting knocked out a dozen times in a row, I was getting pretty frustrated.  I asked my grandson to stop punching and allow me to take potshots at his blue robot - and nothing!  It was almost impossible to knock him out.  So much for the red robot's punching power.