But wait! There's more...
Sure, plenty of Marvel fanboys and girls likely squeed at reveal of the Terrigen Crystals -- but for the truly hardcore, it was likely just as thrilling to hear Kyle MacLachlan as Skye's revenge-crazed, super-strong surgeon biological father casually quip that he'd prefer to be called... "Cal." Yup! As many an eager clue-hunter had predicted, Mr. Hyde now stalks the Marvel Cinematic Universe.
...okay, let me explain:
In the days before the Internet and comic shops, sensational covers teasing (theoretically) sensational stories were the #1 way comics got noticed and sold. One surefire way to pull that off: Find a way to insert famous figures of mythology and popular-fiction into your comics. That's how Batman can wind up battling Satan and The Loch Ness Monster; and it's how Mr. Hyde -- as in "Doctor Jekyll and..." -- arrived in Marvel Comics.
Marvel's Mr. Hyde (aka "Skye's dad" as far as Agents is concerned) is actually a scientist named Calvin Zabo. His backstory is actually fairly typical for Marvel-ized public-domain figures of his type: A mad scientist obsessed with the Jekyll & Hyde story, Zabo stole materials and equipment from various medical facilities that employed him in order to create his own version of a "Hyde Formula," the final result of which allows him to transform Hulk-style into a super-strong brute who subsequently dubs itself "Mr. Hyde."
That's kind of it. He's really not very interesting -- just another super-strong "monster" character for Marvel writers to use when Hulk, Juggernaut, etc are otherwise occupied. The most interesting thing about him, honestly?
His daughter. Retroactively.
Daisy Johnson, aka "Quake," first turned up in the Marvel Universe presumed to be a mutant owing to having been born with the ability to cause localized earthquakes. It was only later in life that she learned that the true source of her powers was having been fathered by Calvin Zabo -- unknown to Daisy's mother as Mr. Hyde. Recruited into S.H.I.E.L.D. (and several other teams) by Nick Fury, she's become an integral (if not widely-known) part of the Marvel Universe over the last decade or so.
As revealed by "Cal" himself on Agents, Skye is indeed his daughter and she is indeed named Daisy. Beyond that, she doesn't appear to have much in common with her pseudo-namesake -- though from the looks of things at the end of the episode, she looks to have a similar power-set. Whether or not she'll be calling herself "Quake" when the series returns is anybody's guess.
So. Agents of S.H.I.E.L.D. has introduced The Inhumans (or, at least, a one-off explanation for people born with powers relating to The Inhumans) to the Marvel Cinematic Universe. What does that means for the series? We'll find out in March, but probably a lot more super-powered enemies mucking about.
What does it mean for series' big-screen siblings, though? Possibly everything -- which we'll explore next week.