They have Adventures, Invincible joins the Teen Team, there is relationship drama, and the Graysons are adorable, with Mark's mom being so blase about her husband and son running off to save the world on a regular basis, and occasionally disappearing for a week or two while being captured by extradimensional aliens or master villains. He's delighted to take up the cape (not literally, he goes for a more modern, capeless costume) and become a superhero like his old man. Mark is a senior in high school, trying to juggle girls, an afterschool job, homework, and college applications like any other teenager, and then his powers kick in. The story starts out as the amazing adventures of Mark Grayson, an ordinary teenager whose dad is Omni-Man, basically this world's Superman, but with a pornstache. You thought the little brother was introduced as a cute sidekick. Kirkman really likes to show what happens when Superman punches a normie.
When superheroes punch each other, there is blood, sometimes a lot of it, and there are entire issues painted with buckets of blood and gore. One of the other features of Invincible, though, is that it is graphically violent. It's not perfect: there are a few silly tangents and a lot of plot holes, some characters who seemed to have no real purpose other than a single scene, and a few early plot threads never resolve, but for the most part, it feels like a very long saga that the writer was able to bring to a conclusion the way he wanted to. Recurring characters really feel like recurring characters whose reappearance was intended all along. You can see things in the final few issues that were set up at the beginning of the series. While Marvel and DC characters have accumulated the cruft of 60-80 years of history, having been written by literally hundreds of different writers, further complicated by endless reboots, Invincible has always been written by one man: Robert Kirkman. The main thing that sets it apart, and won it so many accolades, is that having been steered from beginning to end by a single creator, it is able to preserve a consistent narrative without too many continuity glitches across its entire fifteen-year span. Invincible is an unabashed four-color superhero comic book. Below will be a review of the original comic series, including huge spoilers below the cut.