Ok I started reading this amazing guide after I have already reached tank 30 and have spent about 40 dollars real money (sad I know but games addicting!!) and these are the characters I have so far:
*odin the war deity (lvl5)
*ivory dragon (lvl30)
*gigas (lvl30 and the fire one)
*vampire lord (lvl 22)
*frost demon (lvl 22)
Please help Guid me in the right direction with what I have and what I can do. I really don't want to reroll after spending money on this team. Really sorry to bother you and take up your time. Anything will be of help. Thanks in advance!!