Sorry all, you are all very right!! I should have said, recently turned F2P. You will see a 2nd ascended Krumpus without any emblems! I will let you all guess why I am now 100000% F2P. Cold day in hell when the SG scum get anymore money from me!
purple i will wait or if u have abundant mats maybe viscaro (though not necessary)
yellow norn, she is fun to play with and helpful in maps or quest
blue frost
green zocc as mana controller can save ur life in offense
red is russel since he can pair very well with emilio
note: actually nothing really essential anymore since u get all heroes covered, so it is just a additional luxury collection if u have abundant mats and stop chasing new shiny heroes