Caroline Forbes. She's braver and stronger than she realizes and she loves passionately, even when that love isn't deserved. If she believes something is the right thing to do, she'll follow it through to the end.
Zatanna, if she can let go of her own ego. She has power but she seems to believe it and she can fix everything at her will.
Remus Lupin, if he can let go of his insecurities. He's intelligent, rational. He's also respected by others.
Emma Swan. There's nothing she won't do to protect the ones she loves. Along with her comes others from her world. Get her on side, the others will follow.
Clark Kent, if he can let go of some of his ideology and accept losses will happen. Ditto Robin Hood, same logic. The way to both of them could be with the women they love. Both Lois and Marian have a better sense of reality than the men.