Yondu's beard. The only real gripe I had with Guardians Of The Galaxy and its portrayal of aliens in the Marvel Cinematic Universe was Yondu's beard. It was really obvious that for Michael Rooker's make-up his face had just been spray-painted blue... and they even painted his beard the same colour. And it was verisimilitude-shatteringly silly.
Not so with the mother-frakkin' Kree who turned up in Failed Experiments. These guys were the real deal. Magnificent aliens - even if a bit one-dimensional in their motivations.
With sly references to Iron Man and Captain America, Hive reveals his plan to turn any human he can lay his hands into an Inhuman.
But when the first attempts - conducted rather enthusiastically by Holden Radcliffe (John Hannah) - fail spectacularly, they realise they need some actual Kree blood to truly recreate the first experiment that made Hive what he is.
Therefore Hive activates the Kree artefact he liberated from James and 'summons' back the Kree Reapers who'd been sleeping in stasis at the edge of our solar system, with the idea of capturing one to use as an unwilling blood donor.
Meanwhile S.H.I.E.L.D. has tracked Daisy to Hive's new compound (an abandoned mining town), and has sent Mack and May in with a strike team to take down Hive.
However, Mack is determined - against orders - to use the mission as a chance to rescue Daisy.
Fitz and Simmons are still trying to work on an anti-toxin. Lincoln volunteers to be a guinea pig, but Coulson overrules him. Lincoln doesn't listen and injects himself anyway.
Although there were several plot-strands to Failed Experiments, all were pretty much focused on the main story and this worked very well.
And hopefully we'll get to see some more Kree turning up in a future episode, maybe different castes, different spaceships etc
My only question is, given the Kree Reaper's rather unsubtle crash-landing arrival method, how were they planning to leave to Earth once their own mission was complete?