Halo: Reach skulls

As with Halo 3, Halo: Reach has difficulty-multipliers in the appearance of human skulls. In addition, all of the skulls featured in Halo 3 are included in Reach.

Cloud
The Cloud skull is a new skull featured in Halo: Reach. When the skull is on, the player's Motion Sensor is disabled, replacing the Fog skull in Halo 3.

Firefight Custom Skulls
In Firefight, there are three custom made skulls you can have: Red, Blue, and Yellow.