So then, as most of you know, the Dark Angels have always been either too loyal or too disloayal! Unlike most other chapters out there who had some loyalists and some traitors thoughout the years, the Dark Angels were splintered during the great Horus Heresy. And since that day almost no other Dark Angel has fallen to Chaos due to the vigorous watch of the Interrogator-Chaplains. Where as those who turned from the Emperor and / or the Lion has never come back (save perhaps for the mysterious Cypher).