This prince of Altea has appeared in more games than any other lord. He marries Caeda in the end of Shadow Dragon, and in Awakening Lucina posed as him.
Who is Marth?
100
She is the daughter of the chieftain of the Lorca tribe. She wields a sword and a bow, the latter after she is promoted to a Blade Lord. She is a possible wife for Rath, making her the mother of Sue.
Who is Lyn?
100
She is the demanding Princess of Rausten who believes she is on a divine mission to purge Magvel of evil. She is the niece of the Pontifex Miloah and is normally seen with her loyal Berserker Dozla and her unpaid Rouge Rennac.
Who is L'arachel?
100
The only lord in a Fire Emblem game to not be born into royalty. Instead, his father Greil was the leader of mercenaries, which he took over after Greil's death.
Who is Ike?
100
The brother of Emelina and Liz and the father of Lucina. He is the prince of Iris.
Who is Krom?
200
Contrary to the subtitle of the original game "The Dark Dragon and the Sword of Light", Medeus is classified as this.
What is an Earth Dragon?
200
These two weapons named after the moon an the sun are Lyn's personal swords. She obtains one from her grandfather and the other from the Archsage Athos.
What are the Mani Katti and the Sol Katti.
200
It is the desert country ruled by Queen Ismaire and her runaway, gambling son Joshua. In Chapter 15, you fight both Caellach and Valter here after they burn down its palace.
What is Jehenna?
200
This is the S-Ranked sword wieled by the Swordmaster Stefan. Its name is similar to Lyn's swords in Blazing Sword. I don't know, this answer may be somewhat "foggy".
What is the Vague Katti?
200
She is a young Divine Dragon in Shadow Dragon who returns in Awakening in Spotpass, but also in the main story. She appears to be an adult in her 20s, but she is actually thousands of years old.
Who is Tiki?
300
She is a Myrmidon only obtainable in Chapter 6X, which is a Gaiden Chapter only accessible when only a few characters have survived.
Who is Athena?
300
One of Nergal's Morphs. He orders Jaffar to kill Matthew's girlfriend Leila after discovering that she was a spy for Ostia. Limstella later kills him under Nergal's orders.
Who is Ephidel?
300
The father of the twin lords of Renias. He dies protecting his kingdom's Sacred Stone. You can recruit him only in Creature Campaign by clearing the Lagdou Ruins once.
Who is Fado?
300
This Bishop makes a brief appearance in Path of Radiance posed as a pilgrim. Ike recues him from prison, and he in turn rescues Ranulf from the Black Knight. He is revealed to be Lehran of the Heron tribe in Radiant Dawn.
Who is Sephiran?
300
She has appeared in almost every Fire Emblem game, but she is a playable character for the first time in Awakening even though her husband Jake appeared in Shadow Dragon.
Who is Anna?
400
He was the one who received Mercurius after the War of Darkness. His title in the epilogue is appropriately "Midia's Knight".
Who is Astram?
400
Although being Athos's personal weapon in Blazing Sword, it is the S-Ranked Anima Tome in Sword of Seals, also known as The Infernal Element.
What is Forblaze?
400
This is the city with the first Arena in Sacred Stones and where you can recruit Natasha and Joshua in Chapter 5. It is where Eirika, Ephraim, and Lyon would spend time with each other.
What is Serafew?
400
This sword wielded by the Black Knight is twin to Ike's Ragnell. It is the sword Greil was killed with.
What is the Aldonite?
400
This allows you to access special maps, obtain powerful weapons, and recruit characters from previous games.
What is Spotpass?
500
He spared Nyna's life before Shadow Dragon. He "dies" in the same game, but reappers in Gaiden as Zeke. He returns again in Mystery of the Emblem, joining Marth's army under the assumed name Sirius.
Who is Camus?
500
This Ice Dragon Manakete is the wife of Nergal and the mother of Ninian and Nils. She never makes an in-game appearance, but is mentioned by Negal in the Final Chapter if the player completes Chapter 19XX.
Who is Aenir?
500
This weapon is wielded by Carlyle in Chapter 14 (Eirika's Route) and by Ismaire in Creature Campaign. Ismaire's is the only one you can obtain in the game, unless you encounter a Cyclops at the top of the Tower of Valni with one (less than a 2% chance).
What is the Wind Sword?
500
It was originally thought that he was a Spirit Charmer, but he later discovered that he was Branded. In Radiant Dawn, it was revealled that he was Ashnard's son and the true Prince of Daein.
Who is Soren?
500
He is Olivia's son and is of the Mercenary class. He can only be recruited in Sidequest 6 if Olivia is married.