Pyra and Mythra are playable characters in Super Smash Bros. Ultimate and are collectively the fourth fighters in Fighters Pass Volume 2 and the tenth downloadable character overall. Their inclusion as a playable character was revealed on February 17, 2021.
They were released on March 4, 2021. They are classified as Fighter #79 and #80, respectively.
Just like the Pokémon Trainer, players can select who they want to start with on the Character Select Screen.
As the two act as the same character, they are treated as semi-clones; they have the the same regular attacks but with very different stats and unique Specials. Pyra's regulars are very strong and powerful but it consequently makes her slow, while Mythra is very fast with a focus on racking up damage and combos.
Exclusive to Mythra is an ability called Foresight. Similar to Bayonetta's Bat Within, it is an evasive maneuver where the damage Mythra receives from the attack will be reduced by half, along with giving her the ability to dash left or right.
Jab: A punch followed by a sideways swing and upwards slash of the Aegis.
Flurry Attack: For Pyra, a flickering flame. For Mythra, a series of sparkles. Both end in an explosion.
Grab: For Pyra, she will grab the opponent with a flamed hand. For Mythra, hers will be engulfed in sparkles.
Pummel: For Pyra, she inflicts bursts of flame. For Mythra, she inflicts explosive sparkles.
Edge Attack: Slashes the Aegis in front of themselves
Neutral Aerial: Spins the Aegis in front of them in a similar manner to Pit's, Dark Pit's, and Byleth's Neutral Aerials. For Pyra the attack will only hit once, while for Mythra it will hit multiple times.
Up Aerial: An overhead somersault slash of the Aegis similar to most sword users
For the first screen Mythra will say "Called it", while Rex exclaims "You show 'em, Mythra!". The two slashes she performs are identical to her auto-attack animation in Torna - The Golden Country. In Team Battles with 3 or more members, Rex will not appear for this pose.
For the second screen, Mythra will say "Peak form" as she zooms around.
Both girls will say "This..is the power of the Aegis!" in unison for the third screen. The final pose Mythra assumes in is the same as her official figurine as well as her Fighter Spirit.
All fighters in Pyra and Mythra's Classic Mode are pairs of characters who are mirrors of each other or the same person, referencing the fact that Pyra and Mythra share the same body. The song "Xenoblade Chronicles 2 Medley" will play during the end credits.
Pyra and Mythra's codenames within the game's files are "flame" and "light", respectively, which are the literal translations of their Japanese names (Homura and Hikari).
Uniquely, their fanfare also has a codename, being "element"
Both characters' wardrobe designs in Ultimate have been greatly altered from their original, more revealing versions in Xenoblade Chronicles 2; this was done as to keep within the game's Everyone 10+ (E10+) rating.