Sylbert Rundin parachutes out of his apartment and when the team chases him he shrinks Cisco and Ralph in episode 4x12 “Honey, I Shrunk Team Flash”.
Constantine takes Mia and Diggle to his old friend Lucifer for help traveling to purgatory in episode 6x09 “Crisis on Infinite Earths: Part Three”.
Sara is shot and killed shortly after talking with Laurel in episode 3x01 “The Calm”. Merlyn shows Oliver footage of the murder revealing the shooter in episode 3x09 “The Climb”.
Oliver meets with Lance behind the police station to exchange information in episode 3x02 “Sara”. The vigilante leaves two criminals strung up in a V-shape in episode 5x07 “Vigilante”. Pike is talking to someone on the phone about the intel Oliver gave him about Adrian Chase when he is stabbed by a mysterious figure in episode 5x16 “Checkmate”.
Appears in “Damaged”.
Oliver doesn't kill Maseo on a rooftop in episode 3x20 “The Fallen”.
Roy spies on Nyssa searching Sara's old apartment in episode 3x04 “The Magician”.
Laurel leaves the gym and is watched by Carrie Cutter in episode 3x06 “Guilty”.
Diggle waits outside the nightclub while Oliver and Ted Grant search inside in episode 3x06 “Guilty”.
Oliver flails around trying to stop criminals in Coast City during a flashback in episode 4x01 “Green Arrow”.
Thea tries and fails to prevent the assassination of one of the government leaders in episode 4x01 “Green Arrow”.
Diggle gets caught watching Mina Fayad and ends up in a gunfight in episode 4x03 “Restoration”.
Thea and Diggle head to a nightclub to buy drugs from one of Thea's old dealers in episode 4x04 “Beyond Redemption”.
A woman is attacked in an alley and rescued by Sara who then attacks the woman in episode 4x05 “Haunted”.
Laurel stops Sara from attacking another woman at a club when Oliver and Thea arrive in episode 4x05 “Haunted”.
Oliver beats up a bunch of Ghosts while trying to find the location of Felicity, Thea, and Diggle in episode 4x09 “Dark Waters”.
Laurel distracts the police while Diggle examine's Chang's body in episode 4x11 “A.W.O.L.”.
The team infiltrates the secure facility where the other two kidnapped agents were tracked to in episode 4x11 “A.W.O.L.”.
The group of corrupt cops attacks some drug dealers and ends up killing another police officer in episode 4x04 “Beyond Redemption”.
Diggle gets a text about his brother after picking up some diapers in episode 4x20 “Genesis”.
Wild Dog jumps from one rooftop to another while chasing a criminal in episode 5x02 “The Recruits”.
Thea witnesses the AmerTek executive Janet Carroll arranging an arms sale to Church in episode 5x02 “The Recruits”.
Church is attacked by the mysterious archer who warns him off of attacking the Green Arrow in episode 5x02 “The Recruits”.
Rene and Evelyn head to where Rene believes the drugs are being made for some 'reconnaissance' in episode 5x03 “A Matter of Trust”.
Lance and Chase are escorting the evidence from the Kord Industries break-in to lockup when Church assaults the facility in episode 5x04 “Penance”.
Team Arrow hunts down members of Church's crew trying to find the location where Rene is being held in episode 5x05 “Human Target”. Diggle questions some thug about the killer in episode 5x13 “Spectre of the Gun”.
Rory ties up one of Eric Dunn's former cohorts after Evelyn lures him into an alley to get information in episode 5x07 “Vigilante”.
Evelyn meets with Prometheus on a rooftop in episode 5x07 “Vigilante”.
Laurel tries to jump Michael Ancona in an alley but is beaten up in episode 3x03 “Corto Maltese”. Curtis hacks into the street cameras to track down their quarry in episode 5x11 “Second Chances”. Dinah meets with Vincent and he makes it clear that he wants to get back together in episode 6x09 “Irreconcilable Differences”.
Oliver and Diggle track down Vincent only to find him meeting with the other team.
Black Siren wakes up in Lance's car after he spirited her away from the theater.
Dinah's team searches for clues in the alley and discovers tire tracks and later Oliver team comes by and discovers Dinah's footprint.
Dinah is investigating a murder when the Captain takes her off the case in a suspicious manner.
Curtis warns Diggle about the lightning dangers while overseeing an A.R.G.U.S. operation.
Oliver, Rene, & Curtis track down the prospective new Black Canary to a rooftop but she rebuffs their invitation in episode 5x11 “Second Chances”.
Felicity finds Rory at a metal working shop and tries to convince him to return to the team in episode 5x04 “Penance”. The recruits hang out Rory's shop and discuss the revelations about Oliver in episode 5x06 “So It Begins”. Felicity visits Rory in his shop only to find him packing up to leave in episode 5x12 “Bratva”.
Susan Williams meets with her investigator who has more information on Oliver's activities in Russian when he was supposed to be trapped on the island in episode 5x12 “Bratva”.
The three escaped criminals attack a mob hangout and find someone who has information on the money stash in episode 5x14 “The Sin-Eater”.
Felicity meets Kojo Sledgehammer to agree to join her hacking collective in episode 5x15 “Fighting Fire with Fire”.
Oliver locates Galina Venediktov, Taiana's mother, and asks her for information on Konstantin Kovar in episode 5x17 “Kapiushon”.
Curtis and Dinah watch Derek Sampson pick up a whole bunch of guns in episode 5x21 “Honor Thy Fathers”.
Diggle follows Onyx behind the hotel and stops her attack in episode 6x03 “Next of Kin”.
Diggle buys a questionable serum in a sketchy alley to treat his tremors in episode 6x03 “Next of Kin”.
Black Siren lures a man outside and kills him with her sonic scream in episode 6x04 “Reversal”.
Slade waits outside for Oliver to show up for their trip in episode 6x05 “Deathstroke Returns”.
Dinah is packing up her car when Agent Watson approaches and suggest Dinah is the Black Canary in episode 6x05 “Deathstroke Returns”.
Felicity, Curtis, & Caitlin set up a device to stabilize the breach forming over the city under Diggle's supervision and receive a message from the Earth-90 Flash in episode 7x09 “Elseworlds, Part 2”.
Ryan kicks the asses of two masked criminals after putting on the suit for the first time and demands information in episode 2x01 “What Happened to Kate Kane?”. Ryan continues to struggle in finding her groove as she takes down a dealer from the False Face Society in episode 2x03 “Bat Girl Magic!”.
Ryan has trouble with her wound while on patrol.
Mary and Alice are preparing to head out of the country when Mary gets a killer headache courtesy of Pam.