“Ah, you're Prince Marth! I am Est, of the Medonian Whitewings- Palla and Catria's younger sister.”
—Est in Shadow Dragon
According to the Takayashiki Hideo's Mystery of the Emblem novel adaptation, Est is 17 years old. 
In Fire Emblem Awakening, Est is the first DLC character for the Second Series DLC Pack and was illustrated by Kinu Nishimura.
Est is the youngest of the Pegasus Sisters of Medon, under Minerva. Unlike Palla and Catria, she was late to join, as she had to steal Mercurius before returning. She fell in love with the knight Abel, and eventually married him and moved to Altea.
She and her sisters also appear in Fire Emblem Gaiden. Est gets captured by Geyse, and her sisters follow the pirate ship to rescue her, but they lost sight of it near Zofia Port. Jesi tried to save Est, but got captured. After Celica's party saves Jesi, they went to Geyse's fort, where Geyse was defeated, and Est was rescued.
In Mystery of the Emblem, Est was captured by the Akaneian forces, to force Abel to fight against Marth. She can be rescued and once again fights alongside Marth. After the war, however, she vanishes after leaving Abel.
Est, and her sisters Palla and Catria, are all Pegasus Knights recruited in Celica's route. When considering all of the Pegasus Knights in Gaiden, Est and Catria are both strong all rounders whose balance between Speed and Strength usually makes them the most offensively potent. Palla is strong and durable but slow for a Pegasus Knight, and Clair is very agile but fragile.
In Gaiden, Est is the most statistically impressive of the Pegasus Knight sisters, having the single highest growth rates in the game and by quite a lot at that. She will start out much weaker than her sisters if you leveled them at all, and will require some babysitting until she gains half a dozen levels. However, if you do choose to level her, she will easily become the most powerful of her sisters, beating them both in all stats except for HP. It's worth noting that while Est is better than Catria, she's not significantly better than Catria. They usually wind up even in stats or separated by 1 or 2 points in almost everything. The only stat that really separates Est and Catria is Defense, which Est will have a lot more of.
The only problem with Est is her late recruitment and low level. If you want to put in the effort of bringing her up to speed, she won't disappoint. Not only is she the most powerful among her sisters, but she is among the most powerful in the entire game. However, Catria is nearly as good as her and is available for almost the entire game. So while Est is clearly the strongest sister, Catria winds up being the most useful.
| Iron Lance|
|Lance - C|| Ridersbane|
* - Drops if defeated as an enemy unit in Chapter 20.
In Fire Emblem: Shadow Dragon, both of Est's sisters have their growths raised significantly, while Est's growths have stayed the same. This, due to her low starting stats, usually makes her less useful than in the original. However, she still has a great deal of potential, if properly trained at an arena.
Otherwise, she joins extremely late but has nice growths, and comes with a Ridersbane in a chapter where the enemy is filled with cavalry. Reclassing her to myrmidon or archer are also common choices because she has high growths fit for a swordmaster or sniper with that much higher maximum stats for speed and skill which cancels out that lower strength.
|Lance - C||-|
|Lance - D||--|
“Sorry, General. My place is with the commander.”
—Est's withdraw quote in Chapter 7 in Shadow Dragon
“It's just you and me! ...And my sisters! Triangle Attack!!!”
—Est's quote prepare to strike with a Triangle Attack in Shadow Dragon
“Are my sisters with you?”
—Est's recruitment quote in Awakening
“Commander... I gave it my all...”
—Est's death quote in Shadow Dragon
“I'm sorry, big sister(s)...”
—Est's death quote in Gaiden
—Est's death quote in Mystery of the Emblem Book 1
—Est's death quote in Mystery of the Emblem Book 2
“I'm hurt..Go on without me Commander! I must withdraw”
—Est's retreat quote in Chapter 7
Little Sister - Est
"Est fell in love with an Altean knight, and found that the path of the heart was a surer route to happiness than that of the spear."
- (If both Palla and Catria are alive)
'I'll definitely come again! Thank you, everyone~~'
No matter where she goes, Est always remains upbeat.
- (If one or both are dead)
Remebering the older sister(s) who had died for her sake, Est wept.
Shin Monshō no Nazo ~Hikari to Kage no Eiyū~Edit
"After the war, Est said her goodbyes to Abel, for reasons known only to her and disappeared."
In the French and Italian language, Est means east, as in the cardinal direction. In both French and Latin, Est also means is.
- Est, Palla, and Eldigan are the only recruitable DLC characters in Awakening that do not have recruitable SpotPass versions.