Star-Lord's Helmet

Star-Lord's Helmet is an expanding partial helmet worn by Peter Quill.

History
When Star-Lord was on the planet Morag to obtain the Orb, he activated the helmet to escape from Korath the Pursuer.

The helmet was taken from Quill when he was imprisoned by the Nova Corps on the Kyln. During his escape, he retrieved it along with his other belongings. After retrieving his walkman, he used the helmet to protect himself from the vacuum of space to get to the Milano.

When Gamora's pod was destroyed during the Skirmish on Knowhere, Quill put the helmet on Gamora to protect her from the vacuum of space until they were rescued by the Ravagers.

During the Battle of Xandar, Quill used the helmet during his fight with the Sakaarans.

Capabilities
This helmet utilizes a wide array of capabilities. The ones that were exhibited by Star-Lord include:
 * Size-Altering: The helmet can be shrunk down into a earpiece that is on the back of the user's right ear.
 * Oxygen Purification: The helmet protects the wearer from toxic atmosphere.
 * Back-Up Air Supply: The helmet provides oxygen for the wearer in the vacuum of space.
 * Pressure Support: The helmet protects the wearer's face from sudden changes in air pressure.
 * HUD Display: The helmet can foreshadow an enemy's attack.
 * Thermal Vision: It can detect heat sources.