Like most games anymore, Borderlands 2 has DLC. It is overflowing with it. Some games sort of give up; others have less but more substantial installments. I do not have all of the DLC for Borderlands 2, but I have most of the main points. It seems that most of the DLC centers around some character.
Captain Scarlett and Her Pirate's Booty is the first DLC released. As the name hints, the main quest revolves around finding some long dead pirate's treasure. As established in the previous game's DLC, there are no oceans on Pandora anymore. That little fact doesn't stop places from being nautical and pirate themed. There are boats and anchors lying around. There's a lighthouse that sits on a thin column of rock a thousand or so feet high, and even at the top, you cannot see any large bodies of water. You will see Captain Scarlett again.
Mr. Torgue's Campaign of Carnage involves entering a tournament, and rising to the top. As the name suggests, the weapon manufacturer Torgue sponsors it. Starting in this DLC, some characters from the main story will be stationed in the area you're in. For example, your trainer is Tiny Tina, which makes for some hilarous moments.
Sir Hammerlock's Big Game Hunt supposedly takes you to another continent, but all I found there was a huge cave full of savages. In all, I thought this was the weakest of the four story DLCs. The villain is incompetent and realizes that he's giving key points away like a Saturday morning show. It all ends with disappointment.
Tiny Tina's Assault on Dragon Keep might be the best of the bunch. You are playing as the characters in a Bunkers and Badasses (AKA Dungeons and Dragons) game with the other Vault Hunters back in Santuary. Tiny Tina is the "bunker master", which makes the whole ordeal very hilarious. Sometimes characters will start talking with the noticeable verbal tics of a tweenage girl. The whole thing is a great retelling of the entire Borderlands 2 story in a fantasy environment.
But that doesn't stop there. I have the two extra characters: the mechromancer, and the psycho. I've been playing the psycho all this time, so I was playing the DLC even as I reviewed the base game. I have played through as the gunzerker and started with the commando, and I have got to say that the psycho is my favorite. Starting around Crysis, I realized that melee attacking enemies in a not fantasy game was something that I liked to do. I really liked the struggle between himself and his inner voice. It gets so bad that one of his skills involves him hitting himself in the head to get it out. There is a convincing rumor that he is the father of a major character. It was really weird to realize that I'm playing a psychotic man with a gun; if there was a school around, things would go downhill very fast.
By playing through all this some more, I've come to a conclusion. From the perspective of bullet points and numbers on the box, and the fun I've had, Borderlands 2 is damn near the best game I've ever played*. Considering the fun I've had with Borderlands 2, the DLC is great. Instead of iterating yearly on a franchise, putting out more DLC makes the game bigger. I'm not going to complain. I might return and try out some more DLC when it goes on sale.
*Not the best game ever, but close. Not that I've ever sat down to figure out the best game ever, mind you.