Phase Shifter

The phase shifter is an Iacon relic that grants the user the ability to pass through solid objects. It works intuitively, allowing the user to phase through objects or not depending on the needs of the situation.

Prime cartoon
The phase shifter was stored in the Vaults at Iacon until late in the war, when it was ejected into space as a safety measure when Megatron's forces stormed the Autobot capital. It made its way to Earth where it landed in the area where the humans would eventually build Manhattan. Knock Out and a unit of Decepticons discovered the relic in a Manhattan subway. At that time, none of the Autobots or Decepticons sent to find it knew what powers it possessed until Bumblebee accidentally activated it after retrieving it from Knock Out. The train which was barreling towards him passed straight through him and Arcee explained what the device was after they had defeated Knock Out. Bumblebee then took it back to base with Miko in the opposite seat singing about their victory.

Smokescreen later borrowed it from the Autobots' storeroom and used it to cleverly remove Starscream from the Apex Armor. He borrowed it again when he and Arcee went to find the first Omega Key, and it saved his life when Megatron hit him with a wave of energy from the Dark Star Saber. After he used it to save Optimus Prime and retrieve the Omega Key, Ratchet said he could keep it. Following Smokescreen's capture, Knock Out claimed the phase shifter and used it to pull an Omega Key from Smokescreen's chassis. The Autobot managed to get the device back, embedding Knock Out in a bulkhead in the process. He used it to steal both Omega Keys possessed by the Decepticons, and survive a plummet to the ground. With the kids hostage to the Decepticons, Smokescreen was forced to throw down the phase shifter.

Smokescreen was able to recover the phase shifter during the commotion in which Optimus Prime destroyed the Omega Lock. He utilized the device to recover a near-death Optimus from the wreckage of the base. Smokescreen used the phase shifter to also infiltrate the Decepticon warship to obtain the Forge of Solus Prime per Optimus's request.

He used it during a fight against Darksteel and Skylynx when the battle went badly for the Autobots. It was later taken from him by Knock Out during a jail break by the Decepticons, only for Knock Out to use it to turn against Starscream, ending the rebellion.

Angry Birds Transformers
The phase shifter was used by The Blues in the form of "Smokescreen Bird", granting them an upgrade to their Transform Power (whatever that means).