Gabriel Summers

Energy absorption: Summers can absorb virtually any type of energy and channel that energy through his blasts. It is unknown if Summers can absorb energy to increase his strength, physiology, or the like. His energy absorption ability and his ability to wield energy have their limits. His brother was capable of easily overpowering him with his raw power and had him at his mercy after Summers threw him into a sun. He described himself as a "high order energy manipulator" and an "omega-level energy manipulator".

Energy manipulation: He has the ability to psionically tap and manipulate various forms of energy. Summers can project radiation along the electromagnetic spectrum and even some exotic variants like Scott Summers' optic blasts. Power siphoning: Summers demonstrated the ability to siphon his opponents' powers. It is not known whether Summers permanently keeps these powers or not but that is unlikely.
 * Energy blasts: Summers can generate light, heat, force, electricity, and other forms of energy in the form of powerful blasts. He can generate these blasts from his hands or eyes.
 * Flight: Summers is able to fly and levitate using his powers. He is capable of interstellar flight.
 * Energy constructs: Summers can solidify his energy into force fields and other shapes. The effect of his energy constructs can be used to simulate a form of telekinesis by lifting and moving objects.
 * Power suppression: He can apparently use his powers to override those of another person's mutagenic aura, making them temporarily unable to use their abilities.
 * Energy detection: He is capable of detecting energy signatures from great distances when the power in question is potent. This includes other mutants with energy powers, usually at lesser ranges, and starships at far greater ranges based on their star engines.
 * Energy self-sustenance: He also appears capable of breathing in space.
 * Energy healing: He is capable of healing from seemingly mortal injuries by manipulating the energy his body is composed of. The full extent and speed of his capacity to heal is not known. He did not regenerate his eye or heal his facial scar.

Psionic resistance: Summers has proved to be highly resistant to psionic attacks. The only such attack to be successful was performed by Rachel Summers after he had already lowered his defenses in order to show the X-Men his memories of Krakoa.