The Silver Surfer wields "the power cosmic", absorbing and manipulating the universe's ambient cosmic energies. He can augment his strength to incalculable levels, and is almost totally indestructible. He can navigate space, hyperspace and dimensional barriers, and can fly at near-limitless speeds on his board, entering hyperspace when he exceeds light speed. He has even proven capable of time travel on occasion.
The Surfer does not require food, drink, air or sleep, sustained entirely by converting matter into energy. He is immune to temperature extremes and most radiation, and can survive in vacuum environments such as outer space and hyperspace. He can analyze and manipulate matter and energy, and restructure or animate matter at will, even transmuting elements. He can heal living beings (though he cannot raise the dead), and has proven capable of revitalizing or evolving organic life on a planet wide scale. He can alter the size of himself or of other matter, cast illusions, fire energy blasts, form and manipulate energy constructs, manipulate gravity, absorb and discharge most forms of energy, and phase through solid matter. His senses enable him to detect objects and energies light years away, and to perceive matter and energy in subatomic detail; he can even see through time, and with concentration can achieve limited perception of past and future events in his general vicinity. The Surfer has demonstrated limited telepathic ability on occasion, and has proven able to influence human emotion and sensation.
Paraphernalia
The Surfer's board is composed of the same impervious, cosmic-powered silvery material as its master's skin, and is mentally linked to the Surfer; it moves in response to his thoughts, even when he is not in physical contact with it. The board is almost totally indestructible, but on those rare occasions where it has been damaged or destroyed, the Surfer has been able to repair or even re-create it. The Surfer can attack opponents remotely by directing the board against them, and the board is capable of absorbing and imprisoning other beings, at least temporarily.
http://marvel.com/universe/Silver_SurferDex-Starr became a member of the Red Lantern Corps. Despite having the appearance of a cute little cat, Dex-Starr is one of the most malicious Red Lanterns.
Just like all the other Red Lanterns, Dex-Starr wears a red power ring. The Red Lanterns' power rings grant them the ability to manipulate red energy, typically in the form of red light. The rings can fire blasts of "rage" energy in the form of "rage-energized blood", projected from the mouth of the Lantern or focused through the ring. This blood is flammable, the "flames of rage" somehow burning even in the void of space. The flames can burn through the energy auras of other ring wielders from across the emotional spectrum and corrupt the rival's power ring. The rings can create protective forcefields and allow their wielder to fly at high speeds.
Similarly, Dex-Starr's Red Lantern power ring provides flight, force fields, protection from space and will powered constructs. The red ring's specially replaces his heart and energizes his blood. This allows him to spew a fiery, acid-like substance that burns anything. Red rings increase the wearer's anger, diminishing his self-control, so like other Red Lantern's he can barely make constructs.
Dex-Starr's favorite tactic is to fly up, looking deceptively innocent and cute. With his opponent off-guard, he then spews energized blood.
http://www.comicvine.com/dex-starr/29-58256/