William Dey is a fictional character portrayed by Staz Nair in the TV series Supergirl.
In the first episode they appeared in, titled Event Horizon (season 5), they were 28 years old.
They appear in 39 episodes out of a total of 126 aired and have accumulated 6240 positive votes.
The character of William Dey is mainly associated with Kara Danvers, Nia Nal and Lena Luthor.
Episodes39
Event Horizon
episode S5.E1 october 2019Kara is surprised to find CatCo has a new owner who has brought in a star reporter; new couples emerge and explore their budding relationships; J'onn J'onzz receives an unexpected visitor.
Stranger Beside Me
episode S5.E2 october 2019Supergirl, Alex and Brainiac thwart an alien attack while William investigates Kara; J'onn J'onzz and Kelly use Obsidian tech to solve a problem.
Blurred Lines
episode S5.E3 october 2019Kara tries to mend her relationship with Lena; J'onn J'onzz takes a deep dive into his memories; Kelly tries to help an old friend.
In Plain Sight
episode S5.E4 october 2019Kara's investigation into William Dey's "criminal" activities results in the shocking revelation he is not who she thinks. Meanwhile, the conflict between Malefic and J'onn J'onzz reaches a boiling point.
Dangerous Liaisons
episode S5.E5 november 2019On the eve of the worldwide launch of Andrea Rojas's VR contact lenses, Kara and William team up on an investigation that exposes a terrorist plot. Kelly and Alex celebrate an anniversary, but Alex's safety is in jeopardy.
Confidence Women
episode S5.E6 november 2019While a new villain is under arrest at the DEO, Supergirl uses him to try and understand who is responsible for the recent attacks. Meanwhile, Andrea and Lena think back on their tumultuous past.
Tremors
episode S5.E7 november 2019Supergirl finally learns the truth about Lena while tangling with Leviathan; J'onn J'onnz makes a discovery about his brother's whereabouts.
The Wrath of Rama Khan
episode S5.E8 december 2019Supergirl's struggle against Leviathan reaches a boiling point as she faces off against Rama Khan. Meanwhile, as Lena and Hope work to launch Project Non Nocere, Hope proves to be an invaluable asset to Lena.
Crisis on Infinite Earths: Part One
episode S5.E9 december 2019The Monitor sends Harbinger to gather the worlds' greatest heroes - Supergirl, The Flash, Green Arrow, Batwoman, White Canary, The Atom and Superman - in preparation for the impending Crisis. With their worlds in imminent danger, the superheroes suit up for battle while J'onn and Alex recruit Lena to help them find a way to save the people of Earth-38.
The Bottle Episode
episode S5.E10 january 2020The subsequent complications from the Crisis leave Supergirl to face a chaotic threat.
Back from the Future - Part One
episode S5.E11 january 2020Winn Schott returns from the future just as Supergirl is pursuing a Toyman copycat.
Back from the Future - Part Two
episode S5.E12 february 2020Supergirl helps Winn overcome his greatest fear; Brainy must choose whether to help Alex find evidence against Lex or continue secretly working for him.
It's a Super Life
episode S5.E13 february 2020Mxyzptlk returns with a proposition for Kara; Kara must decide if she wants to change history to become friends with Lena again.
The Bodyguard
episode S5.E14 march 2020Lex tasks Supergirl with protecting Andrea from an anti-tech extremist; Lena moves forward with Non Nocere, with Lex's help.
Reality Bytes
episode S5.E15 march 2020Nia's roommate is attacked by a man targeting Dreamer; Dreamer refuses to give into men's threats and puts herself in the line of fire to stop him; Alex, J'onn and Kelly attempt to rescue a man stuck inside a virtual reality game.
Alex in Wonderland
episode S5.E16 march 2020Alex uses a pair of Obsidian contact lenses to visit a virtual National City where she takes on a whole new persona. Meanwhile, Kelly helps William investigate Lex. Kara deals with difficult news.
Deus Lex Machina
episode S5.E17 may 2020Lex proceeds to lay an intricate plan to bring Lena closer to him, defeat Leviathan's latest attack, and pit Supergirl against Leviathan; how Lex came into power after Crisis is revealed.
The Missing Link
episode S5.E18 may 2020Supergirl and the team go head-to-head against Rama Khan and Leviathan; Lena and Lex must join forces when Project Non Nocere fails, leaving the two siblings in serious danger.
Immortal Kombat
episode S5.E19 may 2020Supergirl realizes that she must work with Lena to stop Lex and Leviathan; Nia struggles with what her dreams are trying to tell her; Brainy realizes there is only one way to stop Lex.
Rebirth
episode S6.E1 march 2021Lex attempts to take control of half the population of Earth, as the first step in his plan to "fix" the universe.
A Few Good Women
episode S6.E2 april 2021While Lex faces trial for his crimes, J'onn and Alex try to access the Phantom Zone to rescue Supergirl.
Phantom Menaces
episode S6.E3 april 2021Supergirl makes a new ally. Lena and Lex battle for control of Luthor Corp.
Lost Souls
episode S6.E4 april 2021Supergirl finds an opportunity to escape from the Phantom Zone but it comes with some dangerous strings attached; Lena joins the Super Friends on a mission but finds she disagrees with their plan of action.
Prom Night!
episode S6.E5 april 2021Brainiac-5 and Nia time-travel to 2009 Midvale to get a sample of Kara's DNA.
Prom Again!
episode S6.E6 may 2021Young Kara experiences kryptonite for the first time, Nia and Brainy are trapped by invading aliens, and a young Cat Grant may be the reason Supergirl never gets out of the Phantom Zone.
Fear Knot
episode S6.E7 may 2021As the Super Friends brave the Phantom Zone to bring Supergirl home, each member of the team is confronted by visions of their worst fear.
Welcome Back, Kara
episode S6.E8 august 2021Kara copes with returning to Earth, with Zor-El posing as her uncle.
Dream Weaver
episode S6.E9 august 2021Supergirl hunts down alien prisoners on a work-release program, while Kelly investigates one of their younger brothers.
Still I Rise
episode S6.E10 september 2021Supergirl struggles to save affordable housing, so Orlando and Joey have a place to live. Meanwhile, Nxyly plots to regain her powers.
Mxy in the Middle
episode S6.E11 september 2021Nxyly attempts to reunite the Allstone using Mxyzptlk as a power source. Meanwhile, Lena finds out the truth about her mother.
Blind Spots
episode S6.E12 september 2021The people of the Heights are affected by the building collapse, and a new hero emerges to protect them.
The Gauntlet
episode S6.E13 september 2021Supergirl and Nxyly battle for the Totem of Courage, and each get part of it. The part that Supergirl acquires causes chaos.
Magical Thinking
episode S6.E14 october 2021Nxyly gets hold of the Humanity Totem, causing chaos throughout National City. Meanwhile, Esme meets her new foster family and Lena attempts to cast her first spell.
Hope for Tomorrow
episode S6.E15 october 2021Supergirl continues to fight Nyxly for the remaining totems but after Nyxly kidnaps William, Supergirl realizes she needs to take a more proactive stance to keep National City safe. Meanwhile, Alex faces the biggest challenge of her life.
Nightmare in National City
episode S6.E16 october 2021Nxyly goes after the Dream Totem, and Nia must join forces with her sister Maeve to stop the imp. Meanwhile, Supergirl worries that she's being pulled in too many different directions.
I Believe in a Thing Called Love
episode S6.E17 october 2021When Lex Luthor appears by Nyxly's side, Supergirl and team must deal with the emotional fallout of facing their two biggest foes at the same time. Alex makes plans for the perfect proposal to Kelly, but work keeps getting in the way.
Truth or Consequences
episode S6.E18 november 2021Esme has a fight at school, and Alex and Kara have a fight over how to settle it. Meanwhile, Nxyly searches for the Truth Totem.
The Last Gauntlet
episode S6.E19 november 2021Supergirl and the super friends take drastic action after a loved one is kidnapped by Nyxly and Lex; an unlikely ally steps in to help the team.
Kara
episode S6.E20 november 2021In the epic series finale, Supergirl is joined by familiar faces from the past to help her stop Lex and Nyxly for good. Meanwhile, Alex and Kelly prepare to walk down the aisle.
- Event Horizon
- Stranger Beside Me
- Blurred Lines
- In Plain Sight
- Dangerous Liaisons
- Confidence Women
- Tremors
- The Wrath of Rama Khan
- Crisis on Infinite Earths: Part One
- The Bottle Episode
- Back from the Future - Part One
- Back from the Future - Part Two
- It's a Super Life
- The Bodyguard
- Reality Bytes
- Alex in Wonderland
- Deus Lex Machina
- The Missing Link
- Immortal Kombat
- Rebirth
- A Few Good Women
- Phantom Menaces
- Lost Souls
- Prom Night!
- Prom Again!
- Fear Knot
- Welcome Back, Kara
- Dream Weaver
- Still I Rise
- Mxy in the Middle
- Blind Spots
- The Gauntlet
- Magical Thinking
- Hope for Tomorrow
- Nightmare in National City
- I Believe in a Thing Called Love
- Truth or Consequences
- The Last Gauntlet
- Kara
Best moments7
- Esme has a fight at school, and Alex and Kara have a fight over how to settle it. Meanwhile, Nxyly searches for the Truth Totem.
- Alex uses a pair of Obsidian contact lenses to visit a virtual National City where she takes on a whole new persona. Meanwhile, Kelly helps William investigate Lex. Kara deals with difficult news.
- Nxyly gets hold of the Humanity Totem, causing chaos throughout National City. Meanwhile, Esme meets her new foster family and Lena attempts to cast her first spell.
- Supergirl continues to fight Nyxly for the remaining totems but after Nyxly kidnaps William, Supergirl realizes she needs to take a more proactive stance to keep National City safe. Meanwhile, Alex faces the biggest challenge of her life.
- Supergirl hunts down alien prisoners on a work-release program, while Kelly investigates one of their younger brothers.
- Brainiac-5 and Nia time-travel to 2009 Midvale to get a sample of Kara's DNA.
- Kara copes with returning to Earth, with Zor-El posing as her uncle.
- Truth or Consequences
- Alex in Wonderland
- Magical Thinking
- Hope for Tomorrow
- Dream Weaver
- Prom Night!
- Welcome Back, Kara