Upon obtaining "Circe" and getting DNA printing, Jacob and Alice use some items to cause Kate to remember some things prior to Tatiana and some False Face Society members attacking.
After giving Ryan her blessing to continue as Batwoman, Kate leaves Gotham City stating to Sophie that she is going to visit her father and Supergirl before going on a quest to find Bruce.
[4] She is a highly skilled yet undisciplined fighter who spent 18 months in prison after two Crows operatives caught her with the drugs that Angelique Martin had in her possession.
After being cured and the news about Kate's "death" being confirmed, Ryan starts to work on getting Angelique out of the False Face Society leading to an encounter with Black Mask.
As Ryan recovers Batman's trophies, she later discovers that Marquis is suffering from psychopathic tendencies due to brain damage inflicted on him by the Joker as a child with his joy buzzer, shown when he brutally beats and kills an assassin sent to murder Jada.
As Marquis takes over Wayne Enterprises, Ryan reluctantly helps free Ivy and acquires the joy buzzer, attracting the attention of Alice, who wants to use it to restore her own sanity as well.
Elizabeth "Beth" Kane / Alice (portrayed by Rachel Skarsten; seasons 1–3; Ava Sleeth as a child) is Kate's presumed-dead twin sister and the leader of the Wonderland Gang whose personality goes from maniacal to charming and back again as she sets out to erode Gotham's sense of security.
Tying a rat to Mouse's corpse, Alice attracts a lot of bats to feed off it which causes them to carry a poison when attacking a Batwoman rally.
Sophie Moore (portrayed by Meagan Tandy; seasons 1–3) is a military academy graduate turned high-level Crows agent and Kate's estranged ex-girlfriend.
Her clinic comes in handy during the riots instigated by Black Mask and she figured out that the Snakebite found on Russell Tavaroff's body can be converted into a vapor to free Kate from the "Circe" persona.
Jacob Kane (portrayed by Dougray Scott; seasons 1–2) is Kate and Beth's father, Bruce Wayne's uncle, and a former military colonel with a chip on his shoulder who commands a private security agency, the Crows, in an attempt to protect Gotham better than Batman could.
After having the tech guys unlock Kate's salvaged cellphone upon Sophie's return, Jacob sees the picture of a portrait with Safiyah's name defacing it.
After a talk with Sophie Moore regarding Luke Fox getting shot, Jacob advises Russell Tavaroff to hand in his gear and go on suspension until further notice.
Catherine Hamilton-Kane (portrayed by Elizabeth Anweis; season 1) is Mary's mom, Kate's stepmother, Jacob's second wife and one of Gotham's most powerful citizens who made her fortune as a defense contractor and the CEO of Hamilton Dynamics.
Renee later talks to Mayor Hartley stating that the Mad Hatter is not the one that fought Batman and to hear her out before Gotham City becomes "Jim Gordon's version" again.
Batwoman had to comply with Renee's offer that involved Alice being a work release consultant in the stolen Batman trophies - a mission she knew they could never complete because she herself had the last one (Joker's buzzer).
Her real goal was for Batwoman and Alice, in the process of tracking down the trophies, to eventually discover where Batman buried Pamela Isley, so that she could free the love of her life.
As a child, he was attacked by the original Joker who hijacked his school bus and zapped his head with his electric joy buzzer, causing serious brain damage.
Ever since then, Marquis has exhibited anger issues and sociopathic behavior such as using a magnifying glass to burn ants to deliberately triggering his father's peanut allergy for a laugh.
While not wanting Ryan to associate herself with Marquis, Jada commissioned the recreation of the freeze serum with help from Virgil Getty in an attempt to put him on ice until a treatment could be found.
When Marquis had captured Jada and four other members of the Black Glove, he declared both of them fated due to the mutual effect of Joker's bus hijacking that ran Gabi's car off the bridge.
As Batwing works to divert the blimp to a desolate part of Gotham City, Batwoman receives help from Alice in fighting him where the joy buzzer was used on Marquis' head.
In the season three finale following the Batblimp's explosion dumping the Joker acid on a desolate part of Gotham City, she broadcasts a warning to the citizens to stay away from the area.
Following some undercover work, Julia saved Luke and Mary from Dire-Flail where she claimed that Kate is dead upon some body parts washing up in Bludhaven.
In season two, Alice still has Mouse's corpse as she mentions her upcoming war with Safiyah Sohail after she put a message on the newspaper talking about Kate Kane's disappearance.
August Cartwright (portrayed by John Emmet Tracy) is Mouse's father who fished Beth out of the river following the accident and imprisoned her to be Jonathan's "friend" and for his own nefarious purposes.
Miguel Robles (portrayed by Nathan Witte) is a Crows agent working for Tommy Elliot who was tasked with getting Lucius Fox's journals, only to accidentally get him killed and frame someone else for it.
Due to her brother-figure Ocean wanting to make more use of the Desert Rose and Beth falling for him, Safiyah punished them by having her hypnotist Enigma suppress their memories of each other.
Angelique Martin (portrayed by Bevin Bru as an adult, Kerensa Cooper as a child) is a former foster acquaintance of Ryan Wilder and used a tactic to rescue her from Candice Long.
Enigma (portrayed by Laura Mennell) is a hypnotist who is a mutual ally of Safiyah Sohail and Black Mask where she also poses as a therapist named Dr. Evelyn Rhyme.