|Attack||Dangerous on contact|
|Health||Approximately five to six bullets from owl|
Blocks refer to enemies first introduced in level 2 of Fat Cat.
Blocks appear to be robotic creatures, with a small black rectangle showing their glowing red eyes. Their bodies seem to be composed of smaller squares and rectangles covering a larger square shape. More than one will always appear in a level in which they are seen in.
Often, blocks move around in each level encountered, taking quite a few hits to destroy with the owl alone (specifically around five to six bullets). They are known in some levels to multiply themselves, spreading out over the entire area, making it harder for the player to pass the level.
The block enemies may also be spawned out of machine blocks and are frequently used in the harder levels.