X-Men: How Apocalypse Turned Gambit Into His Horseman

Here's how Gambit of the X-Men ended up (briefly) turning into a servant of Apocalypse as the Horseman of Death.

Spoilers] To me, my horsemen. (Extraordinary X-Men #8) : r/Marvel

X-Men: 10 People You Didn't Know Were Horsemen Of Apocalypse

X-Men (2nd series) #184

Apocalypse (Character) - Comic Vine

Gambit Becomes Death: The X-Men Blood of Apocalypse Prelude

Horsemen of Apocalypse, Villains Wiki

X-Men: 15 Coolest Incarnations Of The Horsemen Of Apocalypse

Channing Tatum Doubtful Of Gambit Appearance In X-Men: Apocalypse

Horsemen of Apocalypse (Earth-295), Marvel Database