SEASON 3: GIRL OF
Kara dreams of life with Mon-El on an alien world.
SEASON 3: TRIGGERS
Kara battles a powerful metahuman called Psi, who can evoke her
victims' deepest fears, forcing Supergirl to feel guilt over Mon-El.
SEASON 3: DAMAGE
Several children are diagnosed with lead poisoning. Industrialist
Morgan Edge publicly blames Lena's lead device which repelled the
Daxamites. But in reality it was a chemical from one of Morgan's
SEASON 3: WAKE UP
Mon-El is discovered in a crashed ship with several occupied stasis
tanks inside. He explains his pod went through a wormhole to the
31st century, where he's been for the past seven years. He frees
one of the people from the tanks: his wife Imra Ardeen.
SEASON 3: CRISIS
ON EARTH-X PT 1 (2017)
Supergirl defeats a rogue Dominator. Later, she and Alex travel
to Earth-1 to attend Barry Allen's wedding with Iris West, where
a nervous waitress attends to guests. As will be revealed later,
she is the speedster XS, Barry and Iris' daughter from the future.
The storyline then continues into ARROW and THE FLASH,
but there are no Legion-related appearances there.
SEASON 3: REIGN (2017)
Mon-El and Imra explain how their ship came from the future and
how the former founded the superhero team, the Legion.
SEASON 3: LEGION
OF SUPER-HEROES (2018)
Kara is critically injured by the villainous Reign. Mon-El releases
Brainiac 5 from his stasis tank to heal her. Mon and Imra don their
Legion costumes and tackle Reign.
SEASON 3: FORT ROZZ
Brainy and Winn start to bond, as do Supergirl and Imra.
SEASON 3: FOR GOOD
Mon-El and Supergirl tackle Lena's mother Lillian, who's wearing
Luthor's exoskeleton armor.
SEASON 3: BOTH SIDES
Mon-El tells J'onn more about the Legion's origins, and also confides
that he still has feelings for Kara despite loving Imra as his wife.
SEASON 3: SCHOTT
THROUGH THE HEART (2018)
Mon-El brings down a giant robot dinosaur with some neat cape tricks,
while name-dropping Rimbor.
SEASON 3: IN SEARCH
OF LOST TIME (2018)
Mon-El dons his old costume, now modified by Winn, and trains Supergirl
in the art of using capes for battle.
SEASON 3: OF TWO
The being named Pestilence infects people with a virus that Mon-El
compares to the Blight of the 31st century, and Imra says it was
a big problem on Winath. Imra manages to gain a blood sample from
Pestilence for Brainiac to manufacture a working cure.
SEASON 3: TRINITY
The Legionnaires, Supergirl and DEO discuss ways of defeating the
SEASON 3: SHELTER
FROM THE STORM (2018)
Imra tells Supergirl more about the Blight, saying Chameleon was
the first to fall. Then Brainy put the remaining Legionnaires into
the stasis tanks until a cure could be found. The Legion ship, now
repaired, returns to the future, but Mon-El decides to stay behind.
SEASON 3: THE FANATICAL
Mon-El and Kara fly J'onn's spaceship to travel to a meteorite to
find out more about black Kryptonite.
SEASON 3: DARK SIDE
OF THE MOON (2018)
Kara and Mon-El reach the meteor and discover there is a city on
it. Supergirl soon realizes it's a surviving part of Krypton, Argo
City, and that her mother Alura is living there.
SEASON 3: NOT KANSAS
Kara and Mon-El defeat Reign and her body disintegrates. Kara decides
to return to Argo City to be with Alura and invites Mon-El to join
SEASON 3: MAKE IT
Reign is not yet dead and Supergirl and Mon-El, visiting Argo, use
Alura's hologram crystal to discuss battle plans with Winn back
SEASON 3: BATTLES
LOST AND WON (2018)
As Reign attempts to terraform Earth into new Krypton, Imra and
Brainiac 5 return from the future to help. After Reign is finally
defeated, Brainiac 5 decides to stay on present-day Earth because
a distant relative has started wiping out all other AI, and asks
Winn to take his place with the Legion. Winn accepts his offer and
travels to the future with Mon-El.