Board Thread:Warhammer 40k General Discussion/@comment-25618639-20150325213156/@comment-174.29.169.251-20150331225643

Usually the most powerful Space Marines are Chapter Masters, with a few exceptions, I think that the most powerful would be in this order:

1. Kaldor Draigo (not truly legit)

2. Marneus Calgar

3. Lord Commander Dante

4. Azrael

5. High Marshall Helbrecht

6. Logan Grimnar

7. Mephiston

8. Varro Tigurius

9. Ragnar Blackmane

10. Cypher (He appears to still be a loyalist somewhat, and not a Chaos Space Marine)