While we're automatically drawn to the possibilities in all of Kara's relationships — will she hook up with James? Will Winn's crush develop into love? Will Cat continue to obliterate Kara's spirits at work? — the most interesting dynamic lies between Kara and her foster sister, Alex Danvers.
On the surface, Alex seems to be an overprotective — yet loving — sibling who is only watching out for her sister's well-being. But if you look a little closer, there are totally clues that Alex's allegiance to Kara has the potential to go awry at any moment.
When we first meet Alex, she's a child watching from the window as Superman delivers Kara to her new foster family. Alex staring down at Kara from afar through the curtains seems pretty ominous in terms of what's to come.
Let's also take a moment to pause here and appreciate the fact Dean Cain, who starred as Superman in the '90s series Lois & Clark: The New Adventures of Superman, has a cameo as Kara's foster father.
Is it chilly in here? Yes, Alex is being sisterly by helping Kara pick out the perfect blue blouse — it is her signature color, after all — to go on her blind date, but she seems cold, uninterested and in a total rush to get to Geneva. We later learn the Geneva trip is for important business, but still, Alex's vibe when she's in Kara's apartment is just plain bad. Not to mention, Alex is completely discouraging Kara from fulfilling her destiny throughout the entire scene.
It's safe to say that after Kara saves her, Alex is not only ungrateful, she's straight-up pissed. She seems completely unfazed that she had just narrowly escaped a fiery death and just berates Kara for exposing herself. Never once does she acknowledge Kara's excitement or the fact that she would be dead if Kara hadn't come to her rescue. She is only concerned that the world now knows of Supergirl and her powers.
Alex's words say, "I'm only trying to protect you," but everything else in her demeanor screams, "I will destroy you." She yells, "Don't say I didn't warn you," as she storms out.
Also, when we see her as the plane is about to crash, she looks a bit worried — but does she really? It's a bit odd that she seems so cool with the near-disaster, even like she might have known about it beforehand.
Side-eye, much? Halfway through the premiere, we learn that Alex has secretly been working as an agent for the DEO — the Department of Extra-Normal Operations — which monitors and protects Earth from extraterrestrial presence and/or invasion.
Her involvement with the agency is obviously not a coincidence. Did she join because of a lifelong jealousy of Kara and Kal-El's powers? If so, the deep-seated feelings are sure to serve as a great motivator to bring Supergirl down, no matter what.
OK, maybe Alex didn't directly shoot Kara with Kryptonite, but she definitely didn't stand in the way of her coworkers at the DEO. Kara was a novice at flying at that point; if Alex was truly concerned for her sister's safety, as she asserted numerous times, it seems like she would have had some qualms about shooting her down midair.
"Before you came to live with us, I was the star," Alex says to Kara, finally trying to convince her to use her powers. "But how could I compete with you, with someone who could touch the stars? I was happy when you decided not to use your powers. You feeling like less somehow made me feel like more. Now the world needs you to fly, Kara."
Alex has warmed up to the idea that it's OK for Kara to be the star of the family and understands the importance of Kara realizing her potential. However, she's also revealing just how intense her previously mentioned deep-seated jealousy issues with her foster sister really are.
Alex may be on Kara's side for now, but will her jealousy come back and get the best of her?
Also, it really seems like Alex just did a 180 for no reason...Don't fly! Fly! #Supergirl— Dave Eisinger (@DaveEisinger) October 27, 2015
Kara may just be learning about the dangerous Fort Rozz escapees, whom she accidentally brought with her to Earth, but it's obvious Alex has known for quite some time. Alex was also well aware that they have a vendetta against Kara, because her mother was the judge who sentenced them to jail.
"They will do anything to get revenge on your mother and the only way that they can do that now is to hurt you," Alex warns. But why has she waited until now to reveal what she knows? It seems like if a gang of alien felons were kicking around Earth, waiting for the right moment to pounce on her sister, Alex would have given Kara a warning a bit sooner.
The jig is up now so, of course, Alex has to come clean about her knowledge. Why was she hiding it before?
you couldn't show her that a while ago. Alex you suck as a sister #Supergirl— Astro Jonny (@jwsgt) October 27, 2015
So glad Alex was trying to keep Kara safe from the wrath of the Fort Rozz escapees. Still don't trust her though. #supergirl— Terri Clark (@TerriClarkBooks) October 27, 2015
There are, however, moments throughout the premiere when Alex seems genuinely caring towards Kara and the look on her face is one of real concern. It's human to feel like you don't measure up to a sibling, so maybe she is willing to let go of the jealousy to bond further with Kara.
I love that Alex is trying so hard to make things right with Kara. She's opening up to save her relationship with her sister. #Supergirl— Aimee Hicks (@ahicks83) October 27, 2015
She also came to Kara's rescue when Vartox was about to kill her, so there's still a possibility that Alex will remain a powerful ally for Supergirl.
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