Click see inside and BAM! A red hat block that we can't use at all. That block is called the Undefined Hat Block, and it is actually both a Hat Block and a Cap Block. Method 1 on how to get it: Make a new project and drag a block Save it and turn it from a sb3 to a zip Open the json in the zip and switch the block to something that doesn't exist. Turn it back from zip to sb3 and load it Method 2: Backpack hacked block Method 3 (the one that I used): Try to make a My Block with a control character for the text.