Plague Sentry

Plague Sentry appeared in 1995 TV series called Saban's Masked Rider. Plague Sentry is the leader of the Plague Patrol that oversees the enslaved Edenoites. He first appeared in the Mighty Morphin Power Rangers episode "A Friend in Need". His helmet has two long horns and he rides a horse. He is clearly immune to the toxic gas that the Edenoites are forced to excavate. He fits the category of Doubleface's unit.