Frey

Freyr is a cavalier that you get early on into Fire Emblem Dark Dragon and Sword of Light. He did not feature in the origial or the remake. His stats look mediocre at best, but with some leveling up you will find he is the best cavalier/paladin in the game. When you have to send one of the characters away early on in the game, your best choice would be either Kain or Abel(Their stats are almost identical). If you do send away Freyr, you are really missing out. Think of him like Marcus as a cavalier with better growths.