Doc0075: So I need some feedback on how to select the winners of the four special prizes. It was originally going to be the the last four contestants but with the Royal Rumble event, that is not fair as the last people to enter will have a much greater chance of winning.
How about splitting the criteria for the top four? Continue the battle until only one is left standing, and that will be one winner, even if it may well be the last one entering the arena, then pick the remaining three according to how many fights they won and how many rounds they lasted. Say, pick the 2 with most opponents defeated and 1 with most rounds lasted that's not among the two, or vice-versa, and/or use the other criterion as tiebreaker for those with equal numbers. And if tie remains and some of those who returned after a round 1 defeat are involved, possibly remove them since they already had a second chance (feel I can say that since Calad was among those who returned).
Or you could just go randomly, of course, or a mix of these ideas. It's your giveaway and your game after all, and the prizes are mind-bogglingly awesome either way, and the descriptions are neat too.