Master Martial Artist: Due to possessesing all the cells of every Z-Fighter, Cell has shown to be a master martial artist able to fight against the likes of Goku, Vegeta and Future Trunks on equal ground with ease.
Regeneration: Ever since he copied the blood from Piccolo, Cell's regeneration is impressive. Able to regenerate his body after having half of his body blown to bits. However should his core cell be harmed, he won't be able to regenerate.
Absorption: Possibily the main trait of his abilities and the reason of his power increasing and his later forms. He absorbs the biomass of his victims to make him stronger ot to heal him. He managed to absorb at least six hundred thousand humans he encountered. He can use his tail to absorb the victims.
Ki Blasts: Simple casual blasts fired out of his palm. His Ki Blasts are strong enough to destroy large portions of cities and islands. In his final forms, he stated that he has enough ki to "destroy an entire solar system". By chargin ki, he can supposedly "shake the entire earth".
Telekenisis: Can lift a solid mass of earth with his mind.
Afterimage Strike: By moving swiflty around the opponent, Cell can produce afterimages.
Zenkia: Can boost his stats by powering up.
Special Beam Cannon: Taken from Piccolo, Cell fires a laser beam that is inside circles that drills through almost anything.
Destructo Disc: Taken from Krillin, can produce razor sharp discs composed of energy that is said to cut through almost anything. He can control the the discs if he wants to.
Death Beam: Taken from Frieza himself, he shoots a purple-ish powerful beam of energy that travels at high speed.
Barrage Death Beam: A rapid fire version of the move.
Perfec Death Beam: An attack with a bigger radius and a fully-powered version of it.
Solar Flare: Cell emits a flash of light to blind his enemies.