The Megacorp Helmet is an item in Going Commando and Up Your Arsenal. It is used by Megacorp commandos, allowing the wearer to breathe in any environment, including underwater and in space, by synthesizing and recycling a supply of oxygen. It also displays HUD readouts. It is gray in color and has a green-tinted face shield. Ratchet used the item both as a commando in the Bogon Galaxy and when returning to the Solana Galaxy to fight Dr. Nefarious, though it has a transparent face shield in the latter appearance.
Its functionality is identical to the O2 Mask.