Kara arranges to meet both James and Winn behind the building as Supergirl in episode 1x02 "Stronger Together".
Two soldiers sent by Astra attack Hellgrammite for his indiscretion at the chemical plant in episode 1x02 "Stronger Together".
Kara and Alex spot the helicopter falling through the sky and Kara runs off to become Supergirl in episode 1x04 "Livewire".
Cat confronts Livewire outside their old radio station in episode 1x04 "Livewire".
Kara flies in as Supergirl and quickly changes into her street clothes to pick up Cat's son Carter from school in episode 1x05 "How Does She Do It?".
Kara sets up a trap for Red Tornado while the rest of the team hunts its operator in episode 1x06 "Red Faced".
Kara falls to the ground in a trap set by Astra in episode 1x07 "Human for a Day".
Kara heads to Winn's father's old factory and falls into a trap in episode 1x10 "Childish Things".
Alex leads a DEO team to capture a escapee when the Master Jailer attacks in episode 1x14 "Truth, Justice and the American Way".
Alex and Kara try to save Detective Warren from the Master Jailer but Alex gets shot in the process in episode 1x14 "Truth, Justice and the American Way".
Kara shows up to support a young girl who is being bullied for her homemade Supergirl costume in episode 1x16 "Falling".
Supergirl saves a firefighter at a burning building and then gets infected with the Red Kryptonite in episode 1x16 "Falling".
Indigo scares off a newly engaged couple and then meets Non on a roof in episode 1x16 "Falling".
K'hund is robbing an armored car when the DEO arrives to stop him in episode 1x16 "Falling".
Winn finds Siobhan on her apartment's roof in episode 1x17 "Manhunter".
Kara runs down the alley and makes several attempt to fly in pilot episode.
After being rescued by Barry, he and Kara end up in a field outside the city where they introduce themselves in episode 1x18 "Worlds Finest".
Supergirl takes the fight against Reactron from the fundraiser to an empty lot in episode 1x03 "Fight or Flight".
Alex and Hank land in town and Hank struggles to shield Alex and himself from the Myriad signal in episode 1x19 "Myriad".
Lena is taking off in her helicopter when it is attacked by several drones in episode 2x01 "The Adventures of Supergirl".
Supergirl fixes the support to prevent the L Corp building from falling over in episode 2x01 "The Adventures of Supergirl".
Supergirl and Superman help the firefighters put out a building that is on fire in episode 2x02 "The Last Children of Krypton".
Clark lands back in Metropolis and quickly receives a call from his boss in episode 2x02 "The Last Children of Krypton".
Lena Luthor is announcing the rebranding of Luthor Corp when the event is attacked by the assassin John Corben in episode 2x01 "The Adventures of Supergirl". Lena gives a press conference about the sick children and someone takes a shot at her in episode 3x05 "Damage".
Metallo 2 attacks a park in Metropolis while Superman is in National City in episode 2x02 "The Last Children of Krypton".
James and Winn are walking through the market when a telekinetic alien attacks in episode 2x20 "City of Lost Children".
Kara and Clark head to the industrial district where Metallo is unloading equipment in episode 2x02 "The Last Children of Krypton". Brian is being kidnapped by Cadmus when Alex and Maggie show up to rescue him and gather intel in episode 2x15 "Exodus". J'onn and Kara watch M'yrnn as he marvels at Earth in episode 3x03 "Far from the Tree".
A hiden alien-friendly bar where the gang regularly hangs. Maggie Sawyer takes Alex to a secret alien bar in episode 2x03 "Welcome to Earth". Hank returns to the bar to apologize to M'gann only to be captured by Roulette in episode 2x04 "Survivors". Hank confronts M'gann about her true nature in episode 2x07 "The Darkest Place". Mon-El follows the real Hank Henshaw outside as and fights him as the virus is released inside the bar in episode 2x08 "Medusa". M'gann and J'onn are attacked by the White Martian Armek outside the bar in episode 2x11 "The Martian Chronicles". Mon'el draws out Mr. Mxyzptlk and challenges him to a duel in episode 2x13 "Mr. & Mrs. Mxyzptlk". Cadmus agents kidnap Lyra and several other aliens from the bar but Guardian manages to capture one of them in episode 2x15 "Exodus". Kara heads outside to clear her head and gets a pep talk from Cat Grant in episode 2x21 "Resist". Winn runs outside after hearing about his father's death and James talks to him in episode 3x14 "Schott Through the Heart".
Maggie is interviewed by the news about the apparent Guardian murders in episode 2x07 "The Darkest Place".
James returns to the van after another bit of vigilanting and he apologizes to Winn and brings Lyra back onto the team in episode 2x18 "Ace Reporter".
Kara finds Lillian and agrees to team up to rescue Lena in episode 2x21 "Resist".
President Marsdin hosts a press conference for her signing of the Alien Amnesty Act but this too is interrupted by an attack by Scorcher in episode 2x03 "Welcome to Earth".
Kara is walking through the gardens thinking about her future when she is attacked by a drone controlled by Felra in episode 3x21 "Not Kansas".
Alex joins Maggie outside a warehouse in a fancy outfit for their not-a-date at the fight club in episode 2x04 "Survivors".
Hank and M'gann are forced to fight each other at Roulette's fight club but are saved by Supergirl and the DEO in episode 2x04 "Survivors".
The Resistance is constructing a portal to another world when they are attacked in episode 3x08 "Crisis on Earth-X, Part 1".
Alex arrives at the police station just as Maggie is forced to release Roulette and then she asks Maggie out for drinks in episode 2x04 "Survivors". Maggie is walking Chet and his cohorts to the transport van when the three criminals are killed by Cadmus in episode 2x05 "Crossfire".
Maggie and Alex track down the Quill who is a suspect in the murder of the alien in episode 2x04 "Survivors".
Kara confronts Gayle Marsh as she is loading up her loot and is finally able to resist the fear in episode 3x02 "Triggers".
Lena invites both Kara and Supergirl to her gala where she lays a trap for the three criminals terrorizing the city in episode 2x05 "Crossfire".
Supergirl arrives to find the gang using an anti-gravity gun during their latest heist in episode 2x05 "Crossfire".
James reveals his face to a panicking woman before heading inside to save her child in episode 3x23 "Battles Lost and Won".
The mysterious leader of Cadmus meets with the criminal gang and provides them with the new alien weapons they requested in episode 2x05 "Crossfire".
Alex heads to the parking garage to ask Maggie to lay off Guardian and ends up talking about her feelings in episode 2x07 "The Darkest Place".
Kara once again tries to stop Gayle Marsh but finds herself again debilitated by fear in episode 3x02 "Triggers".
Kara attempt to stop a bank robbery only to find the perps sporting alien weaponry in episode 2x05 "Crossfire". Maggie is trying to negotiate with some band robbers who took hostages when Kara bursts in through the roof and takes them out herself in episode 2x19 "Alex".
Kara smashes into the ground unconscious and is surrounded by bystanders in episode 3x09 "Reign".
Mon-El attempts to be charitable and is captured by Cadmus for his trouble in episode 2x06 "Changing".
Mon-El and Guardian stop the mutated Dr. Jones from killing Rand O'Reilly and other bystanders until Supergirl can arrive to stop him once and for all in episode 2x06 "Changing".
Reign and Kara smash to the ground in the street and Kara takes a beating in front of a bunch of bystanders in episode 3x09 "Reign".
A group of researchers in the arctic find a frozen wolf body and something goes terribly wrong when they go to dissect it leading to the D.E.O.'s investigation in episode 2x06 "Changing".
Dr. Jones heads back to his lab after being rescued by the DEO and kills his boss who wants to fire him in episode 2x06 "Changing".
James interrupts a deal between Brian and his drug dealer and squeezes some information about the attack on the square from him in episode 2x20 "City of Lost Children".
James, Winn, and the alien refugees leave their hideout to watch the spacecraft flying over the city in episode 2x20 "City of Lost Children".
Kara finds Thomas Coville beneath the stadium with the Kryptonian pod set to detonate in episode 3x04 "The Faithful".
Cyborg Superman breaks into the lobby of L Corp to steal the isotope needed to use the Medusa virus but is thwarted by Kara in episode 2x08 "Medusa".
Lyra takes Winn to the art gallery and convinces him that they should break in to have some hot museum sex in episode 2x16 "Star-Crossed".
Kara and Mon-El find themselves trapped on Slaver's Moon after Mon-El ignores Kara's orders and follows her through the portal in episode 2x09 "Supergirl Lives".
M'yrnn gives J'onn one final memory before shapeshifting into the Earth to stop the destruction in episode 3x23 "Battles Lost and Won".
Kara and Mon-el head to the police parking garage where a group of officers is under attack by what appears to be Livewire in episode 2x10 "We Can Be Heroes".
Kara yells at Mon-El outside the DEO after he disobeyed her orders and put the police officers at risk in episode 2x10 "We Can Be Heroes".
Livewire is being tortured to extract her powers by a mad scientist at an abandoned power company. Guardian and Mon-El arrive to rescue her but get in over their heads until Supergirl arrives in episode 2x10 "We Can Be Heroes".
Maggie and the cops show up to find a criminal tired up for them by Guardian in episode 2x10 "We Can Be Heroes".
John Corben is being questioned during Lillian Luthor's trial when he attacks the courtroom using his Metallo abilities in episode 2x12 "Luthors".
Lillian takes Lena to one of Lex's hidden lairs to retrieve some anti-alien weapons from an armory in episode 2x12 "Luthors".
Jeremiah returns to the Cadmus facility after stealing the list from the DEO in episode 2x14 "Homecoming". Cadmus is loading the kidnapped aliens onto their spaceship to send deep into space when Alex shows up to infiltrate the facility in episode 2x15 "Exodus".
Kara and Rhea meet to fight a single combat for the fate of Earth in episode 2x22 "Nevertheless, She Persisted".
J'onn talks to Kara as they watch the ceremony from a nearby rooftop in episode 3x01 "Girl of Steel".
Oliver gets a call from Felicity about the wedding while he is fighting a group of ninjas in episode 3x08 "Crisis on Earth-X, Part 1".
The evil versions of Kara, Oliver, and Wells assemble on a rooftop after their attempt to kill the heroes fails in episode 3x08 "Crisis on Earth-X, Part 1". After landing on a roof, Reign holds an injured Kara over the edge before dropping her to the ground in episode 3x09 "Reign".
Supergirl comes to help as Maggie and Alex are chasing down a truckfull of thieves with heavy weaponry in episode 3x01 "Girl of Steel".
Everyone arrives in Central City for the wedding in episode 3x08 "Crisis on Earth-X, Part 1".
Maggie and Alex keep watch during the unveiling ceremony for the Supergirl statue which Lena Luther is presenting in episode 3x01 "Girl of Steel". Citizens run in a panic as Reign's earthquake rips through the city in episode 3x22 "Make it Reign".
Source: Floriana Lima — Instagram
Kara tries to stop Psi from robbing a bank but she uses her powers to stop escape in episode 3x02 "Triggers".
Sam wakes and gets Ruby ready for school and later they talk about Ruby's fight in episode 3x02 "Triggers". Lena stays at Sam's house after the attack during her press conference in episode 3x05 "Damage". Sam wakes up from a nightmare and realizes she doesn't remember her trip the day before in episode 3x09 "Reign". Sam plays with Ruby in the morning and then sees a newspaper on Reign's attack in episode 3x10 "Legion of Superheroes". Sam is watching a movie with Ruby when she has a terrible feeling in episode 3x21 "Not Kansas". Ruby encourages Sam to tell everyone about her new symptoms in episode 3x22 "Make it Reign".
Source: AprilBC23 — Twitter
Kara goes to save someone from a fire only to learn he put himself in danger just to be saved in episode 3x04 "The Faithful".
James and Winn accompany Kara to the meeting listed on the strange pamphlet and find themselves in a Cult of Supergirl meeting in episode 3x04 "The Faithful".
Lena brings James to a meeting with a contact but they are attacked by a guy with a laser gun in episode 3x09 "Reign".
Reign interrupts a gang deal on the docks killing all of the gang members involved in episode 3x09 "Reign".
Kara leaves her symbol on the roof to draw out Reign and then confronts her when she arrives in episode 3x09 "Reign".
Kara and Reign smash into an office holiday party and smash up the place during their fight in episode 3x09 "Reign".
Sam picks Ruby up from school to play hooky for the day in episode 3x13 "Both Sides Now".
Sam is trying to spend a normal day skating with Ruby only to have Reign take over and leave Ruby alone in episode 3x13 "Both Sides Now".
James confronts Olivia and the cultists as Guardian to rescue Tanya but is unmasked and chased away when the police arrive in episode 3x19 "The Fanatical".
Tanya tells James that she thinks his identity as the Guardian is cool in episode 3x19 "The Fanatical".
The pod lands outside the strange city and Kara heads into town and grabs a disguise with her companion in episode 3x20 "Dark Side of the Moon". Kara is talking to some locals in the market when a construction crane collapses and later she goes to dinner with her old childhood friend Thara in episode 3x21 "Not Kansas".
J'onn and James meet with the CEO of the company that produces the custom rifles for the DEO to track down the weapon that was used against the cop in episode 3x21 "Not Kansas".
Alex talks to one of the partners about Arthur Willis and how he might attack the office in episode 3x21 "Not Kansas".