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Jafar says: Read my lips and come to grips with the reality!

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Are we mad? I'm afraid so.
~ Jonathan Cartwright

Johnathan Cartwright, also known as Mouse, is a secondary antagonist in the first season of Batwoman.

He is an adoptive brother to Beth Kane, and the son of August Cartwright. He is criminal and a member of the Wonderland Gang who also has an ability to impersonate anyone.

He is portrayed by Sam Littlefield.

History

Johnathan Cartwright grew up in isolation due to his disfigurement. He lived alone with his father, August Cartwright, until they saved Beth Kane. Johnathan’s father held Beth against her will and during that time, Johnathan befriended her. At some point, he was sent to Arkham Asylum and Beth became the criminal Alice. Johnathan (going only by Mouse) escapes Arkham and rejoined Alice as they hid out in an abandoned apartment.

Alice and Mouse conspired to steal a weapon from the company ran by Alice‘s stepmother, but mistrust formed between the two of them when Mouse found out Alice had been hiding that her sister Kate Kane is Batwoman. Mouse raged at Alice for deception and affection for Kate, causing him to use the acquired weapon to kill their hostage.

Alice later talked with Mouse and said she wanted both Kate and Mouse to be with her. Mouse said he doesn’t like to share and Alice told Mouse that they would be sharing Kate, assuring Mouse they would kill Kate if she didn’t join them.

Trivia

  • Jonathan Cartwright is a gender-bent male version of the character and is a reference to Jane Cartwright, also known as Jane Doe.

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Secondary Antagonists
China White | Billy Wintergreen | Brother Blood | Isabel Rochev | Ruvé Darhk | Andrew Diggle | Conklin | Anarky | Talia al Ghul | Artemis | Ishmael Gregor | Tobias Church | Anatoly Knyazev | Cayden James | Joe Wilson | Dante | Grant Wilson | Trickster | Doctor Alchemy | Marlize DeVoe | Amunet Black | Vanessa Ambres | Joseph Carver | Zaman Druce | Valentina Vostok | Atropos | Indigo | Silver Banshee | Colonel James Harper | Cyborg Superman | Thomas Coville | Morgan Edge | Otis Graves | Manchester Black | Eve Teschmacher | Red Daughter | Phil Baker | Margot Morrison | Rama Khan | Catherine Hamilton-Kane | Jonathan Cartwright | Chuck Dodgson | Hush | August Cartwright | Enigma | Tatiana | Russell Tavaroff | Overgirl | A.M.A.Z.O | Lala | Syonide | Lady Eve | Kara Fowdy | Giselle Cutter | Helga Jace | Carson Williams | Sara Grey | Yuri Mosin | Leslie Larr | Zeta-Rho

Minor Antagonists
Adam Hunt | Constantine Drakon | Martin Somers | Jason Brodeur | Huntress | Frank Bertinelli | Ted Gaynor | Firefly | Count Vertigo | Al-Owal | Dollmaker | Mayor | Officer Daily | Milo Armitage | Clock King | Chase | Vertigo | Komodo | Cooper Seldon | Captain Boomerang | Danny Brickwell | Michael Amar | Joseph Cray | Cupid | Mina Fayad | Deathbolt | Phaedra Nixon | Thomas | Joyner | Double Down | Liza Warner | Calculator | Bug-Eyed Bandit | Janet Carroll | J.G. Walker | Derek Sampson | Scimitar | Cyber-Woman | Hideo Yamane | Sean Sonus | James Edlund | Justin Claybourne | Kimberly Hill | Sam Armand | Sheck | Alex Faust | Nylander | Athena | Virgil | Beatrice | Red Dart | Kodiak | Silencer | Wade Eiling | The Mist | Weather Wizard | Girder | Rainbow Rider | Pied Piper | Peek-a-Boo | Everyman | Clyde Mardon | Multiplex | Simon Stagg | Blackout | Clay Parker | Vincent Santini | Trickster II | Anthony Bellows | Killer Frost (Earth-2) | Dr. Light (Earth-2) | Geomancer | The Turtle | Tokamak | Atom Smasher | Sand Demon | Lewis Snart | Tar Pit | Reverb | Trajectory | James Zolomon | Griffin Grey | Rupture | The Rival | Mirror Master | Top | Plunder | Magenta | Shade | Clive Yorkin | Abra Kadabra | Heat Monger | Samuroid | Kilg%re | Gregory Wolfe | Matthew Norvock | Nergal | Black Bison | Dwarfstar | Prank | Crucifer | Laurel Lance (Earth-X) | Rag Doll | Jones | Goldface | Ultraviolet | Dr. Light | Sunshine | Mr. Blake | The Colonel | Jon Valor | Hawk-Beasts | Bud Ellison | Per Degaton | The Hunters | The Pilgrim | The Leviathan | Baron Krieger | Shogun | Lead Samurai | Quentin Turnbull | Henry Stein | Tabitha | First of the Fallen | Vartox | Hellgrammite | Maxima | Reactron | Ethan Knox | Red Tornado | T.O. Morrow | Jemm | Dirk Armstrong | Bizarro | Toyman | Miranda Crane (White Martian) | Metallo | Scorcher | Roulette | Parasite | Phillip Karnowsky | Beth Breen | Rick Malverne | Zod | Bloodsport | Pestilence | Mercy Graves | Natalie Hawkings | Pamela Ferrer | The Hat | Midnight | Magpie | Executioner | The Rifle | Bruce Wayne (Earth-99) | Miguel Robles | Nocturna | Duela Dent | Mabel Cartwright | Johnny Sabatino | Tim Teslow | Joker | Victor Zsasz | Ethan Rogers | Candy Lady | Amygdala | Ellis O'Brien | Kilovolt | Cluemaster | Circe Sionis | Prometheus (Earth-X) | Quentin Lance (Earth-X) | Psycho-Pirate | Will | Joey Toledo | Deputy Chief Cayman | Cleaners | Tori Whale | Eldridge Whale | Glennon | Steven Conners | Looker | New Wave | Shakedown | Heatstroke | Coldsnap | Instant | David Fuglestad | Thaddeus Killgrave | Reno Rosetti | Atom-Man

Anti-Villains
Green Arrow | Deadshot | Amanda Waller | Nyssa al Ghul | Bronze Tiger | Ragman | Vigilante | Stanley Dover | Captain Cold | Gorilla Grodd | Killer Frost (Earth-1) | Heat Wave | King Shark | Time Wraiths | Black Siren | Solovar | Music Meister | Cassandra Savage | Nora Darhk | Astra Logue | Kayla | Maxwell Lord | Livewire | Master Jailer | Lena Luthor | Purity | Mister Mxyzptlk | Psi | Malefic J'onzz | Two-Bits | Painkiller | John Henry Irons | Lucifer Morningstar

Groups
Royal Flush Gang | League of Assassins | A.S.A. | H.I.V.E | Suicide Squad | Shadowspire | Demolition Team | Rogue Anti-Vigilante Task Force | Jackals | Ninth Circle | Longbow Hunters | Deathstroke Gang | Stillwater Gang | Legion of Doom | Project Cadmus | Children of Liberty | Morae | Crows Security | Wonderland Gang | False Face Society | Many Arms of Death | Leviathan | Black Hole | Mirror Duplicates | The 100 | Shadow Board | Masters of Disaster | Markovian Insurgents | Dominators | Shadow Demons | Intergang

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Comics
Abbadonia | Alice | Amygdala | Anarky | Bane | Black Mask | Blockbuster II | Bloody Mary | Bruno Mannheim | Christopher Falchion | Cutter | Deathstroke | Electrocutioner | Firefly | Fright | Green Fairy | Hugo Strange | Intergang | Killer Croc | Killshot | Kobra Cult | Kyle Abbot | La Llorona | Lamprey | Mad Hatter | Many Arms of Death | Maro Ito | Medusa | Mortician | Mr. Freeze | Nathan Grantham | Nocturna | Night-Thief | Nyx | Penguin | Poison Ivy | Professor Pyg | Religion of Crime | Riddler | Rush | Scarecrow | Scatter | Scorpiana | Sister Shard | Tahani | Whisper A'Daire | Wolf Spider

Movies
Batman: Mystery of the Batwoman: Penguin | Bane | Rupert Thorne | Carlton Duquesne
Batman: Bad Blood: League of Assassins (Talia al Ghul, The Heretic, Onyx, Firefly, Tusk, Mad Hatter, Electrocutioner, Hellhound, Calculator, & Killer Moth) | Black Mask

Television
Season 1: Wonderland Gang (Alice, Jonathan Cartwright, & Chuck Dodgson) | August Cartwright | Hush | Crows Security (Catherine Hamilton-Kane & Miguel Robles) | Magpie | The Executioner | The Rifle | Anti-Monitor | Monitor | Lex Luthor | Bruce Wayne (Earth-99) | Shadow Demons | Nocturna | Duela Dent | Mabel Cartwright | Johnny Sabatino | Tim Teslow | Safiyah Sohail | Joker
Season 2: Many Arms of Death (Safiyah Sohail, Tatiana, The Pike, & Dire-Flail) | Alice | False Face Society (Black Mask & Rudy) | Enigma | Crows Security (Russell Tavaroff & Miller) | Ethan Rogers | Hush | Victor Zsasz | Candy Lady | Amygdala | Ellis O'Brien | Kilovolt | Cluemaster | Gotham City Police Department | Circe Sionis | Wonderland Gang (Jonathan Cartwright) | Catherine Hamilton-Kane | Joker