We also meet Green Arrow, Wildcat, Deadman, Bronze Tiger, and The Atom.
But Aquaman (John Di Maggio, Futurama, Penguins of Madagascar, Ben-10) is by far my favorite. He manages to be endearing and annoying at the same time. He's larger than life and willing to tell of his adventures to anyone who will (willingly or unwillingly) listen.
Not to be outdone, we also see many of the classic villains appear along with some I had never heard of: Kite Man (Jeffrey Combs, The 4400, Justice League, Star Trek: Deep Space Nine), gliding thief, nemesis and former employer of Plastic Man; Black Manta (Kevin Michael Richardson, The Penguins of Madagascar, The Cleveland Show), a surface dwelling criminal who seeks dominion of the sea; Gorilla Grodd (Di Maggio in another role), super-intelligent gorilla from Gorilla City seeking revenge over the human race; and many more.
Honestly, when I watch an episode of Batman: Brave and the Bold it's a very guilty pleasure. It's fun to see how cheesy some of the lines can be (deliberately) and how the bad guys inevitably foul up and let the good guys win. These are definitely simplified hero vs. villain stories, but they're great for kids and adults who want to become kids again for a little while.
Other than the episodes and a game trailer, you don't get any extras, but that shouldn't prevent you from enjoying any of the 13 great episodes in this collection.
So if you've seen an episode or two and want to catch up or simply want to have a good time, be sure to check out Batman: The Brave and the Bold - Season One, Part One. I'm very excited to see when part two comes out so I can enjoy my favorite episode of the series so far, "Mayhem of the Music Meister!" starring Neil Patrick Harris as the Music Meister!