Dexter's Diner is a diner owned by Dexter Jettster on Coruscant that Obi-Wan visits in Attack of the Clones. This place serves as the hub for the game. When you start a new game or load a file you will be brought here. The first point of interest are the four doors lined up next to each other. The three doors with an Episode number above lead to that Episodes levels. While the fourth door, marked with a question mark, leads to the bonus level, unlocked when you get all 17 True Jedi's (the Stud Total) in the game. The only door unlocked when you start a new game is the Episode I door.
The next point of interest is the counter. Here you have the ability to buy stuff with the studs you collect during levels. The first option is Hints, these are very cheap (they don't even reach 100 studs) and give you basic information about various things. Mainly attacking moves and abilities. The next option is Characters, here you can buy any extra characters that are available for purchase after completing a level. These will gradually unlock as you complete various levels. The characters available for purchase after a stage will be noted in that stage's walkthrough. (If the character name has a number in brackets after it. It can be bought from the shop, if it doesn't, you unlock it after completing stage, no purchase necessary.) The third option is Extras. These are mostly cosmetic differences that do nothing but make your favourite Star Wars characters look silly. There are a couple of really helpful ones though. The final option is Cheats, here you can input a code to unlock a character without purchasing them. Even if you haven't unlocked the ability to purchase them.
The other two doors in the diner that look slightly different both lead outside. Here you can view all your Mini-Kits, finished or not. Aside from that, there's not much here.
Unlocked Characters: Qui-Gon Jinn, Obi-Wan Kenobi, Gonk Droid (250), PK Droid (350).