Heroes who were meant to be villains, but went rogue and abandoned the other villains. They are similar to redeemed villains, but they were never villains to begin with.

Their darker counterparts are Fallen Heroes; who are (in great contrast to Defectors) were once originally heroes who began progress into becoming the villain. Some of which are also on the Heroes Wiki. (i.e Duncan from Total Drama series, Tord from the EddsWorld series, Korekiyo Shinguji from Danganronpa v3 Killing Harmony, etc.)