Jean Grey is a powerful telepathic and telekinetic mutant, named Marvel Girl, who also had access the Phoenix's powers. Another character based Jean is named Jena Pyre and her sister Madelyne. They are the guardians of the Phoenix Sword, whose powers Jena absorbs.
In the original Marvel Mangaverse and Ronin serie, Jean is called Marvel Girl and is incredible powerful, capable of summon the Phoenix force too.