Marvel Girl/Phoenix Jean Grey-Summers
X-Men, vol. 1 #1 (1963)

Fifth and final of the team's founding members, although she had met Xavier before the others. Ex-wife of Scott Summers. She was killed by Kuan-Yin Xorn in New X-Men, vol. 1 #150 (2004) and was later resurrected by the Phoenix Force in X-Men: Phoenix – Endsong (2005) as White Phoenix of the Crown.

Currently in the "White-Hot Room" with other incarnations of the Phoenix Force.
Powers: Possesses telekinesis and telepathy. As the template of the Phoenix Force, she is able to generate unlimited amounts of energy, travel through time-space, and manipulate matter on a subatomic level.