Four Horsemen

Dark City Villain Group

The four horseman are Apocalypse‘s personal warriors and always play a key role in his plans for mutant conquest and domination. The enhancements made to horseman are often a combination of both biological or genetic manipulation and the employment of the celestial technology that Apocalypse uses.
More on Comic Vine:
https://comicvine.gamespot.com/horsemen-of-apocalypse/4060-40423/