X-Men: Declassified

Mr. Sinister

Nathaniel Essex

Sebastian Shaw

Black King

Phoenix

Jean Grey

Chamber

Jonothon Starsmore

Husk

Paige Guthrie

Synch

Everett Thomas

Thunderbird

John Proudstar

X-Man

Nate Grey, typically of Earth-295

Lucifer

Marvel, Hell-Lord

Skin

Angelo Espinosa

Shadow King

Amahl Farouk

Fabian Cortez

Acolytes / Upstarts

Meltdown

Tabitha Smith

Bastion

Sebastion Gilberti, Marvel

Onslaught

psychic entity, from Marvel

Harry Leland

Black Bishop

Amelia Voght

Acolytes

Bedlam

Jesse Aaronson

Thunderbird

Neal Shaara