To get "Can Robo" Can Bomb, Can Pods, Can Boots, and Can Gun, win the Tournament in your house. You can now enter Lucy's room. In there you will see lots of people talking about what they did for the game (similar to "talking" credits). Go through the second door and you will see more people. In the second room there is a robot (not a Custom Robo). Talk to him after he is done talking. The game will save. Go to the nearest parts generator and get ready to laugh at what you just unlocked.