Who is Selina Kyle, Sofia’s half-sister, who sent the letter?

The closing minutes of The penguinwhile grossly uncomfortable, the two gave tiny hints of a superhero (and an anti-hero) yet to come. And while we’ve lacked actual heroes to root for in this origin spin-off story — our feelings about Sofia Falcone-turned-Gigante (Cristin Milioti) are still… conflicted — it looks like they could be in line for season two .

While we are still waiting for the green light The penguins follow-up series, let’s unpack the two DC Comic Easter Eggs in the finale, including an all-important letter to Sofia from someone who goes by the name of Selina…

Who is Selina Kyle?

Sofia is back in the throes of Arkam State Hospital – Oz managed to frame her for many of the deaths that plagued the series – and we know from flashbacks that she barely survived the first time she was locked up by her family in a decade. So when we see her back in her cell, she’s off in the corner. Still, at least she has her weird side-kick lover, Dr. Julian Rush. He tells her that there have been letters to her, “the usual rants, poems and marriage proposals,” but there is one particular letter he thinks she should look at. It’s in a black envelope – the first clue – and it’s from a woman who claims to be her half-sister. It’s from one Selina Kyle… aka Catwoman.

Selina first appeared as Catwoman, her cat burglar and jewel thief alter-ego, in Batman #1 in 1940. In 1966 she made her first on-screen television appearance in Batmanplayed by Julie Newmar, then Eartha Kitt, followed by big-screen adaptations of her sleek feline persona by Michelle Pfeiffer and Halle Berry.

Taking a quick dip back into the DC Comics catalog, several stories suggest that Carmine Falcone is actually Catwoman/Selina’s father – though other stories suggest it’s Rex Calabrese. And Selina’s letter wakes up the formerly catatonic Sofia as she smiles a knowing smile. The sisters could do it for themselves in series two: Will they finally take down the Penguin together?

Bat signal

The letter from Selina isn’t the only nod to an incoming favorite. As the incredibly creepy final scene of the series, Eve tells Oz, “There’s nothing standing in your way now,” to which he replies, “Damn right.”

Then, oh-so-faintly in the night sky outside, a beacon of light shines up with the iconic bat signal on it. Watch your back, Penguin: Batman’s back.