The heir to a hunter...
Four men weilding swords...
Two rocky creations to give Ben Grimm a run for his money...
A man you might call Mental...
A woman who nearly destroyed one man's heaven...
A cosmic annihilator...
A cosmic gang that recently suffered a break up...
1) I'd say Kraven's daughter Ana or Bloodstone's daughter....but you used the male tense. I'll say the Grim Hunter or Alyosha Kravenoff.
2) Rocky creation makes me think robot, but I can't think of rock covered robots. Perhaps Sandman (sort of grainular/rocky and he has fought Ben a lot) and Quicksand (who has similar powers).
3) Father Garnoff (deceased leader of the soviet super soldiers).
4) hmm.....could this be the female varient of Loki?
5) Thanos
6) Guardians of the Galaxy