We've got spies, invisible players, and other methods of hiding.
However, we've never taken the time to wonder, if all of these bricks are absolutely everywhere, why not be a brick to hide?
That's right, a brick playertype. It starts off as an item. Once activated, you become a 2x2 brick. Activate it again, and you become a normal person.
Sadly, you can't move. This would be for multiple reasons. The main one, glitches. If you hop into a hole that's your brick's size, and turn back, well... you see the problem. On top of that, aligning to the grid and facing the right direction would be difficult. That's why you would snap to the grid, and be unable to turn your body. However, you can still rotate your view, like your Blockhead turns their head.
The color of the brick takes on the player's chest color. Also, you do not say "Ouch!" when hit. That would help keep suspision away.
It's the perfect camoflauge. The perfect disguise. And so simple. Hide within your surroundings, by becoming your surroundings.
Think like the brick. Act like the brick. Be the brick.