‘Age of Ultron’ an Avengers overdose

It will surely stand as one of the most peculiar and possibly ironic entries in a director’s filmography that in between Joss Whedon’s two “Avengers” films there reads “Much Ado About Nothing”: a low-budget, black-and-white Shakespeare adaptation sandwiched between two of the most gargantuan blockbusters ever made.

In “Avengers: Age of Ultron,” there is definitely aplenty ado-ing. Too much, certainly, but then again, we come to the Avengers for their clown-car excess of superheroes, their colorful coterie of capes.

What binds Whedon’s spectacles with his Shakespeare are the quips, which sail in iambic pentameter in one and zigzag between explosions in the others. The original 2012 “Avengers” should have had more of them, and there’s even less room in the massive — and massively overstuffed — sequel for Whedon’s dry, self-referential wit.

As a sequel, “Age of Ultron” pushes further into emotionality and complexity, adding up to a full but not particularly satisfying meal of franchise building, and leaving only a bread-crumb trail of Whedon’s banter to follow through the rubble.

The action starts predictably with the Avengers assaulting a remote HYDRA base in the fictional Eastern European republic of Sokovia. They are a weaving force: Robert Downey Jr.’s Iron Man, Chris Hemsworth’s Thor, Mark Ruffalo’s Hulk, Chris Evans’ Captain America, Scarlett Johansson’s Black Widow and Jeremy Renner’s Hawkeye.

Their powers are as various (supernatural, technological, mythological) as their flaws (Iron Man’s narcissism, the Hulk’s rage, the Black Widow’s regrets). Downey’s glib Tony Stark/Iron Man is the lead-singer equivalent of this super group and, I suspect, the one Whedon likes writing for the most. “I’ve had a long day,” he sighs. “Eugene O’Neill long.”

What “Age of Ultron” has going for it, as such references prove, is a sense of fun, a lack of self-seriousness that persists even when things start going kablooey — something not always evident in other faux-serious superhero films.

In Sokovia, they encounter duplicitous twins: the quick-footed Quicksilver (Aaron Taylor-Johnson) and the mystical Scarlet Witch (Elizabeth Olsen). The real villain, though, is the titular Ultron, an artificial intelligence that the Scarlet Witch slyly leads Stark to create, birthing not the global protection system he hopes, but a maniacal Frankenstein born, thankfully, with some of his creator’s drollness.

Ultron (James Spader) builds himself a muscular metallic body and begins amassing a robot army to rid the planet of human life.

But the drama of “Age of Ultron” lies only partly in the battle with Ultron. The film is really focused on the fraying dysfunction of the Avengers and their existential quandaries as proficient killers now untethered from the dismantled S.H.I.E.L.D. agency.

There’s not a wrong note in the cast; just about anything with the likes of Spader, Ruffalo, Johansson, Hemsworth and Downey can’t help but entertain. But the dive into the vulnerability of the Avengers doesn’t add much depth and saps the film’s zip.

All of the character arcs — the Avengers, the bad guys and the new characters — are simply too much to tackle, even for a master juggler like Whedon. The movie’s hefty machinery — the action sequences, the sequel baiting — suck up much of the movie’s oxygen.