The man who came out with AJ Lee and attacked John Cena at the end of RAW is Big E. Langston.
Langston was one of the most over guys in NXT and is considered one of the top talents in the developmental system outside of The Shield.
Michael Cole referred to him by his developmental/NXT name of Big E. Langston. We reported several weeks ago that there was talk of more developmental/NXT talents being called up to the main roster. As most of you know, Triple H is in charge is WWE's developmental system and these call-ups are at his direction.