Favorite: Eliwood, though Marth is really close. I used to really like Marth for some reason, and still do, but the problem is that I can't quite think of that reason. Eliwood, who would've been in 2nd before, is now in 1st because I can actually think of reasons why I like him. I like his personality, stats, and story. He just is really like able to me. HMs: Marth, Leif, FE9!Ike, and Ephraim.
Least Favorite: Micaiah. I just don't really find her that interesting, besides her awesome hair. She just seems the most "goody two-shoes" of the lords, until the whole P3 stuff comes up. From what I recall correctly, she knows that joining the war is unjust, but she does it anyway because Pelleas tells her to. I know there are other reasons and whatnot, but it still just bugs me. HMs: Lyn and Eirika.
And about Ephraim's hair, it looks really teal/turquoise/whatever to me, kinda like Miku's hair.