Gabriel Summers

Gabriel "Gabe" Summers, also known as Vulcan, was a Class 4 mutant from the United States and the Majestor of the Shi'ar Empire.

Biography
Gabriel Summer's history began in the Shi'ar Empire as the unborn child of Christopher and Katherine Summers. Katherine was pregnant with Gabriel when she and her husband were abducted by D'Ken Neramani. Christopher escaped in an attempt to save both mother and child, but she was killed in retaliation by D'Ken.

Gabriel was removed from his mother's body and placed in an incubation accelerator, typically used to breed new slaves, aging him to his prime adolescence. Sent to Earth to became a slave for Dakan Shakari, Gabriel escaped and was found by Moira MacTaggert with little to no memory of who he was or where he came from. She took him in as her ward and instructed him in the use of his nascent powers.

When Charles Xavier requested help from Moira's mutant wards to rescue the original X-Men, he recognized Gabriel's mental imprint as being related to Cyclops. He was a member of the team that attempted to rescue the original X-Men from Krakoa.

Powers
Energy Absorption: Vulcan could absorb virtually any type of energy and channel that energy into his blasts. It is unknown if he could absorb other effects, however. His energy absorption ability and his ability to wield energy had their limits. For example, his brother Havok was easily capable of overpowering him with his raw power by overloading his ability to absorb energy.

With the energy he has absorbed, he was able to generate light, heat, force, electricity, and various other forms of energy in the form of powerful blasts. By projecting these blasts beneath him, he was able to achieve interstellar flight. Additionally, he could solidify his energy into forcefields and various other shapes.

Lastly, due to his ability to absorb energy from outside sources, Vulcan was sensitive to energy signatures from potent sources. This included other mutants with energy-based powers at lesser ranges and starships at far greater ranges.

Genetic Power Immunity: Vulcan was capable of withstanding his brothers' abilities with no ill effects. This is a result of their close genes, a quirk of mutant genetics that is common among siblings.

Weaknesses
Overconfidence: Though extremely powerful and showing an aptitude for strategic thinking, Vulcan's overconfidence always led him to defeat.