In the last season, the Avengers met tough soldier Carol Danvers, who worked alongside a scientist who turned out to be the Kree operative Mar-Vell. His caring for Danvers led him to help her and the Avengers defeat the Kree robotic Sentry - an act which stalled the threat for the moment but kicked the can down the curb for another day. This episode IS "another day" as now an invasion force of Kree, including Yon-Rogg, a reluctant Mar-Vell and one of the highest officials in the Kree empire behind the Supreme Intelligence itself - Ronan the Accuser. In the time since "459", when Danvers and the Avengers literally saved the earth from an alien robot, the U.S. has created a new agency called SWORD which is designed to specifically counter alien threats. To this end, Danvers - who was given super powers during the battle with the Sentry robot - is teamed with Abigail Brand in leading the agency and attempting to co-opt Kang's 40th century aircraft, Damocles, for their own ends. Unfortunately, the agency is still in set-up mode and has yet to actually apprehend a single alien and the insufferable Henry Gyrich - better known from the X-Men franchise, although he has a long history making the Avengers' lives miserable as well. The irony is that an invasion by Skrulls has begun, although it is under the radar and probably being kept a secret by SHIELD to avoid a panic. The Kree fleet announces that they are here to judge earth, as the planet exists in their galactic empire; the earthlings will either be judged as worthy to become the Kree's slaves (or colony worlds at best), or be destroyed as threats or nuisances. This leads to Danvers' debut as Ms. Marvel, a superhero name taken in honor of Mar-Vell, in her attempt to stop the Kree invasion and save the planet. To this end she is backed up by her old allies the Avengers - who are short handed as usual and thus only Iron Man, Hulk and "Capt. America" being available. I do like the continued trend of acknowledging when certain members are gone and some idea as to why, instead of simply shrugging like "JUSTICE LEAGUE" often did. In a way the Avengers themselves mostly play second fiddle to Ms. Marvel here, who gets the focus of the episode; considering that Ms. Marvel is set to join the team properly afterward, this more than forgivable and actually matches the roster-joining episodes of Black Panther ("PANTHER'S QUEST") and Captain America ("LIVING LEGEND").
Jennifer Hale reprises her role as Ms. Marvel/Carol Danvers here, and as usual does a bang-up job. She's a veteran voice actress period, but has had a long history of roles in Marvel cartoons; off the top of my head, she was Felicia Hardy/Black Cat in "SPIDER-MAN: TAS", Jean Grey in "WOLVERINE & THE X-MEN", and MJ/Lady Vermin in "SPIDER-MAN UNLIMITED". As usual she is capable of portraying a heroine as both tough and occasionally vulnerable or awkward without any of it not being in synch. Danvers was hesitant to debut as a superhero and is genuinely awe-stricken by Avengers such as Iron Man, but when the time comes to stand for what she believes in, she does so without hesitation. More so than her flight and physical strength, her energy absorbing powers play a critical role here, as not even the Hulk is ultimately able to stand up to Ronan for long. Probably the best part of the episode is the difference in opinion between Danvers and Mar-Vell. Danvers naturally sees Mar-Vell as a traitor because he has brought an invasion fleet to earth with the full intent to enslave the human race. To Mar-Vell's perspective, he sees it as the best of two bad options as he is aware of the vastness of the Kree Empire and believes the earth would be destroyed in a war with it. While Ronan dismisses the human spirit as "arrogance", many aliens in sci-fi fiction naturally see the preference to die on one's feet rather than live on their knees as distinctively unique to Earthlings. Naturally, through sheer determination Ms. Marvel proves able to withstand even Ronan's "universal weapon" to save the day. This is very important as while Wasp has been the sole founding heroine on the team - and Black Widow a reoccurring guest role - Ms. Marvel is easily the most powerful heroine the show has yet seen. Hulk fans may be irritated that the Green Goliath got jolly-stomped by Ronan, but I still don't mind a Hulk who isn't simply invincible and unbeatable. Mar-Vell was trying to do what he thought was best for Danvers and earth, although his error was being an outsider who had no idea what it meant to be human, because he isn't. He just played one on TV (roughly). Ms. Marvel's depiction overall was great - and I am quickly becoming a fan of that original costume.
Meanwhile, Agent Brand and Gyrich are forced to survive an invasion of Damocles by the Kree invaders, in which Brand showcases her blunt manner and the fact that she's more than human. Comic fans know that she's a human/alien hybrid, but TV watchers may have to suffice with simply knowing she can shoot energy beams. Sydren, a member of her SWORD crew from the comics (and another Joss Whedon creation), is also introduced as a Kree slave who Brand liberates who is able to utilize "inhuman" hacking skills to get the artificial intelligence of Damocles to work WITH the agents than against them. His character model seemed to frustrate the animation team as it kept shifting. I've never been a fan of Brand in the comics - I feel she's essentially the same sort of stereotype as Maria Hill often is, but she's portrayed fairly well here. Her dry sense of dark humor is on display more, which contrasts her with Hill to a degree. Gyrich naturally is his sniveling and irritating self. Purists may bemoan the fact that the Kree sport their "Ultimate" designs here rather than their traditional ones, but I think it works out very well to make them seem truly alien instead of humans with face-paint.
While Iron Man and Hulk play to type, "Cap" gets his biggest role of the season here. "Cap" seems ever eager to battle the Kree with a zeal the Avenger hasn't had before, and is ever wary of the threat they represent. Naturally, this is because he is a Skrull mole and genetic enemy of the Kree. Both both the Skrulls and the Kree are adversarial in Marvel's comic history, it is worth noting that in terms of the comics, it was the Kree who sparked the original centuries spanning intergalactic war. In ancient times, the Skrulls were more peaceful and trusting, and offered to share their technology with one of two members of a planet they visited - provided they engage in a fair contest of innovation to prove their worth. The humanoid Kree built a city while the sentient plants Cotati made a garden. Based on a sheer rumor that the Cotati were going to win, the Kree destroyed their garden, slaughtered the Skrull visitors and outright stole their technology - which they reverse engineered for their empire of conquest since. The Skrulls became less trusting and more vengeful since; if this show played things out in that way, it could make the upcoming struggle very interesting. "Cap" naturally makes contact with the mothership, noting that the arrival of the Kree elevates their own plans. And what might Kang have to do with all this? He warned that Cap would be key in the destruction of time; was it because this "Cap" is a Skrull, or because Rogers brought Bucky back from time unconsciously last season with the Cosmic Cube, thus leading to the break-down of time?