Tarot holding the lantern and explaining its powers.

The Cosmic Lantern (also known as Cosmic Lamp) is a Celestial object given to King as a method of keeping Pete the Griffin away. It releases some sort of celestial energy that keeps Lower-Celestial beings such as Pete or Spirit Dragon from being able to see any mortal within the vicinity. The lantern works with a "deniability field" which warps a celestial's perception so they cannot see anyone under the lantern's influence, nor see or hear people talking to them, as demonstrated by Satau in Housepets 5000 BC, Part 2.

The lantern would eventually shatter itself in Housepets 5000 BC, Part 3, after the gang accidentally causes a huge war that was too big for the lantern to cover up.