Super Smash Bros. Brawl

Super Smash Brothers: Brawl (大乱闘 スマッシュ ブラザーズ X, literally: Great Fray Smash Bros. X) is the third and most recent installment in the Smash Bros. series, exclusively for the Nintendo Wii. Apart from it's updated graphics, items, stages and character roster, few major changes have been made to the game since its predecessor, Super Smash Bros. Melee. Super Smash Bros. Brawl has a lot more Fire Emblem content then Melee, having two characters, a stage, more trophies, music, a Assist Trophy Lyn, stickers and more.

Fire Emblem Characters
Marth, the main character of Fire Emblem: Ankoku Ryū to Hikari no Tsurugi and one of the main characters in Fire Emblem: Monshō no Nazo, once again makes his return as a secret character in the SSB series. As a character, his appearance and moveset have been virtually unchanged from Melee, the largest differences most likely being the shortened length of his Falchion and the change in animation for his ability "Shield Breaker". Marth still relies entirely on his quick swordplay and ability to easily form combos. Here is a tip: Hitting with tip of Marth's sword gives more damage than any other part of the sword. For example, Marth's regular A attack without the tip of the sword gives 8 damage. But Marth's A attack while using the tip of the sword gives 12 damage. Marth's Final Smash, Critical Hit, causes him to dash forwards and strike a single enemy (multiple enemies if they are close enough) and deal 60% damage and (unless terrain blocks the flight path) an instant KO. Upon striking, a Fire Emblem-esque health counter with 60 HP appears, dropping rapidly to 0. Note that the Final Smash is the only Marth attack with the "White Line Flash" associated with Falchion, the Regalia, etc.
 * Marth

Fire Emblem Stages
Castle Siege is the only stage in the game based the Fire Emblem series. Unlike most stages featured in Super Smash Brothers series, the stage is not set in a particular location in the Fire Emblem universe, but of a generalized theme of many of its games. The stage initially takes place atop a castle surrounded by lush rolling forests. As the name implies, the castle is currently under siege; large flaming rocks rain down on the structure from nearby catapults. After a short time, the castle rooftop caves in and the players fall into the interior, an area which appears to be a throne room containing breakable statues. The third and final transition brings the players down into a lava filled cave, where they stand atop a large stone balancing over the lava pits. Oddly enough, the players seem to "fall" back onto the roof shortly after entering the lava caves.
 * Castle Siege

Fire Emblem Music
The Fire Emblem Theme is more or less exactly as it sounds, the theme of Fire Emblem. Orchestrated, slightly revamped and with a Latin choir added.
 * Fire Emblem Theme

"Mila's Divine Protection" originates from the game Fire Emblem Gaiden, being the second installation in the series. The song itself has had the main Fire Emblem theme integrated into it.
 * With Mila's Divine Protection (Celica Map 1)

"Attack" isn't just one song, but rather a combination of two different scores from Rekka no Ken. The song begins with "Strike", the common attack theme heard when engaging in combat, and transitions into "Rise to the Challenge", the boss battle theme for major bosses.
 * Attack

"Prepare to Advance" is the song heard when in the pre-battle screen in the game Fire Emblem: The Sacred Stones. The song has been remixed, revamped and slightly lengthened for Brawl.
 * Prepare to Advance

"Winning Road" is the song played in Fire Emblem: Fūin no Tsurugi and Fire Emblem: Rekka no Ken, when the player is close to completing a chapter. Another title which has been remixed for Brawl.
 * Winning Road: Roy's Hope

The "Shadow Dragon Medley" contains several songs, most of which are fairly short, from the original Fire Emblem Game, Fire Emblem: Ankoku Ryū to Hikari no Tsurugi.
 * Shadow Dragon Medley

The music which plays when the Black Knight is fought or engages a character in combat. The music is unaltered from it's original games, Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn.
 * Against the Dark Knight

One of the songs heard in Fire Emblem: Path of Radiance. The score has been unedited, as with many of it's fellow Path of Radiance and Radiant Dawn counterparts featured in Brawl.
 * Crimean Army Sortie

The unaltered theme of the antagonist, Oliver, in Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn.
 * Power-Hungry Fool

Similar in content to "Winning Road: Roy's Hope", as this song is played when the player is close to completing certain maps of the game Fire Emblem: Path of Radiance.
 * Victory is Near

An unaltered song played in Radiant Dawn. However, it is incorrectly named, as it's original name is called "Eternal Bond". It also plays in the Subspace Emissary, when Ike first appears to assist Marth and Meta Knight to fight the Ancient Minister.
 * Ike's Theme

Originally just called "Fire Emblem", this song first appeared in Super Smash Bros. Melee as the only Fire Emblem song available and the secret track at the Hyrule Temple stage. The song has been slightly modified after it's transition from Melee to Brawl. The song itself is a remix of the theme "Together We Ride" twice and after a piano music until in the end of the music it's a remix of Fire Emblem Theme.
 * Fire Emblem (Melee)

Trophies

 * Ashnard
 * Lyndis
 * Sothe
 * Elincia
 * Marth
 * Ike (Path of Radiance form)
 * The Black Knight
 * Critical Hit (Marth's Final Smash)
 * Great Aether (Ike's Final Smash)

Stickers

 * Marth (Twice, his FE1 and FE3 versions)
 * Mist
 * Greil
 * Ike (Twice, his FE9: as a sticker and playable character, and FE10 versions)
 * The Black Knight
 * Ashnard
 * Eliwood
 * Lyn
 * Hector
 * Ninian
 * Guy
 * Roy
 * Lilina
 * Dieck (as Deke)
 * Rutger (as Rutoga)
 * Sothe
 * Micaiah
 * Eirika
 * Ephraim
 * Myrrh
 * Joshua
 * Nabarl (as Nabaaru)
 * Shiida

Trivia

 * Ike's Final Smash, Great Aether, has never appeared in Fire Emblem. It could be a reference to either Lehran's Medallion or to when Yune gave Ike her power in Radiant Dawn.
 * Almost all Fire Emblem games have made an appearance in the Super Smash Bros series whether they are characters, stickers or music. The only ones left out are: Seisen no Keifu and Thracia 776.
 * A cutscene in the Subspace Emissary shows a scene similar to the game over screen in Radiant Dawn.
 * Although often not noticed, Lyndis has earrings in Rekka no Ken, which she does not have in Brawl.
 * Ashnard can be seen in the Castle Siege stage in the throne room.