James "Jimmy" Olsen / Guardian - Supergirl

Supergirl

Main cast, played by Mehcad Brooks

Episode 1x01: Pilot (Oct 26, 2015)
Episode 1x02: Stronger Together (Nov 2, 2015)
Episode 1x03: Fight or Flight (Nov 9, 2015)
Episode 1x04: Livewire (Nov 16, 2015)
Episode 1x05: How Does She Do It? (Nov 23, 2015)
Episode 1x06: Red Faced (Nov 30, 2015)
Episode 1x07: Human for a Day (Dec 7, 2015)
Episode 1x08: Hostile Takeover (Dec 14, 2015)
Episode 1x09: Blood Bonds (Jan 4, 2016)
Episode 1x10: Childish Things (Jan 18, 2016)
Episode 1x11: Strange Visitor from Another Planet (Jan 25, 2016)
Episode 1x12: Bizarro (Feb 1, 2016)
Episode 1x13: For the Girl Who Has Everything (Feb 8, 2016)
Episode 1x14: Truth, Justice and the American Way (Feb 22, 2016)
Episode 1x15: Solitude (Feb 29, 2016)
Episode 1x16: Falling (Mar 14, 2016)
Episode 1x17: Manhunter (Mar 21, 2016)
Episode 1x18: Worlds Finest (Mar 28, 2016)
Episode 1x19: Myriad (Apr 11, 2016)
Episode 1x20: Better Angels (Apr 18, 2016)
Episode 2x01: The Adventures of Supergirl (Oct 10, 2016)
Episode 2x02: The Last Children of Krypton (Oct 17, 2016)
Episode 2x03: Welcome to Earth (Oct 24, 2016)
Episode 2x05: Crossfire (Nov 7, 2016)
Episode 2x06: Changing (Nov 14, 2016)
Episode 2x07: The Darkest Place (Nov 21, 2016)
Episode 2x08: Medusa (Nov 28, 2016)
Episode 2x09: Supergirl Lives (Jan 23, 2017)
Episode 2x10: We Can Be Heroes (Jan 30, 2017)
Episode 2x12: Luthors (Feb 13, 2017)
Episode 2x13: Mr. & Mrs. Mxyzptlk (Feb 20, 2017)
Episode 2x15: Exodus (Mar 6, 2017)
Episode 2x16: Star-Crossed (Mar 20, 2017)
Episode 2x17: Distant Sun (Mar 27, 2017)
Episode 2x18: Ace Reporter (Apr 24, 2017)
Episode 2x20: City of Lost Children (May 8, 2017)
Episode 2x21: Resist (May 15, 2017)
Episode 2x22: Nevertheless, She Persisted (May 22, 2017)
Episode 3x01: Girl of Steel (Oct 9, 2017)
Episode 3x02: Triggers (Oct 16, 2017)
Episode 3x03: Far from the Tree (Oct 23, 2017)
Episode 3x04: The Faithful (Oct 30, 2017)
Episode 3x05: Damage (Nov 6, 2017)
Episode 3x07: Wake Up (Nov 20, 2017)
Episode 3x09: Reign (Dec 4, 2017)
Episode 3x10: Legion of Super-Heroes (Jan 15, 2018)
Episode 3x12: For Good (Jan 29, 2018)
Episode 3x14: Schott Through the Heart (Apr 16, 2018)
Episode 3x15: In Search of Lost Time (Apr 23, 2018)
Episode 3x16: Of Two Minds (Apr 30, 2018)
Episode 3x17: Trinity (May 7, 2018)
Episode 3x18: Shelter from the Storm (May 14, 2018)
Episode 3x19: The Fanatical (May 21, 2018)
Episode 3x20: Dark Side of the Moon (May 28, 2018)
Episode 3x21: Not Kansas (Jun 4, 2018)
Episode 3x22: Make It Reign (Jun 11, 2018)
Episode 3x23: Battles Lost and Won (Jun 18, 2018)
Episode 4x01: The American Alien (Oct 14, 2018)
Episode 4x02: Fallout (Oct 21, 2018)
Episode 4x03: Man of Steel (Oct 28, 2018)
Episode 4x04: Ahimsa (Nov 4, 2018)
Episode 4x05: Parasite Lost (Nov 11, 2018)
Episode 4x06: Call to Action (Nov 18, 2018)
Episode 4x07: Rather the Fallen Angel (Nov 25, 2018)
Episode 4x08: Bunker Hill (Dec 2, 2018)
Episode 4x09: Elseworlds, Part 3 (Dec 11, 2018)
Episode 4x10: Suspicious Minds (Jan 20, 2019)
Episode 4x11: Blood Memory (Jan 27, 2019)
Episode 4x12: Menagerie (Feb 17, 2019)
Episode 4x13: What's So Funny About Truth, Justice, and the American Way? (Mar 3, 2019)
Episode 4x14: Stand and Deliver (Mar 10, 2019)
Episode 4x15: O Brother, Where Art Thou? (Mar 17, 2019)
Episode 4x16: The House of L (Mar 24, 2019)
Episode 4x17: All About Eve (Mar 31, 2019)
Episode 4x18: Crime and Punishment (Apr 21, 2019)
Episode 4x19: American Dreamer (Apr 28, 2019)
Episode 4x20: Will the Real Miss Tessmacher Please Stand Up? (May 5, 2019)
Episode 4x22: The Quest for Peace (May 19, 2019)
Episode 5x01: Event Horizon (Oct 6, 2019)
Episode 5x02: Stranger Beside Me (Oct 13, 2019)
Episode 5x03: Blurred Lines (Oct 20, 2019)
Episode 5x04: In Plain Sight (Oct 27, 2019)

Guest cast, played by Mehcad Brooks

Episode 6x20: Kara (Nov 9, 2021)