Spark armor

Using the power of the AllSpark, a Cybertronian could augment themself with any non-sentient vehicle or machine in the form of spark armor, combining its capabilities and weaponry with that of the wearer. This includes tank guns, missiles, flight, drills, and the like.

Fiction

Cyberverse cartoon

When Optimus Prime and Megatron both arrived to claim the AllSpark, its guardian Cheetor granted them spark armor from a jet and helicopter, respectively, for use in a trial by combat. Trials Starscream later demonstrated the power of the AllSpark to Slipstream and the assembled Seekers by forming spark armor from a construction vehicle. He later used his new upgrade in an attack against the Nemesis and Megatron. Dark Birth

Later, Starscream granted Sky-Byte and Jetfire spark armor from a tank and drill-mining vehicle in order to pit them against one another and distract the Autobots and Decepticons from his plans. Both kidnapped the other's respective leader, dueled in a coliseum at Megatron's suggestion, and flew home with their respective leader. Infinite Vendetta