u/EpsteinDidntKillHmsf

Im a returning player and been playing for about a week now on and off. Ive got 18k steel and am unsure of what Hero to unlock. I dont have any bundles or anything so even heroes like Jorm and Shaolin are still locked for me. Is there a Hero thats a must have or is it just subjective and pick one? Just curious to see what the community thinks! Thanks!