I was under the impression that it was a dream conjured by Aglaecwif when Malik was trying to rescue Alexis, she was offering to show him the truth. In that dream on the dead planet he was lamenting his dead brethren and his faith. Which kinda makes me think the trio superhumans might be from another world that succumbed to the monster invasion. However it seems they all got infected with their superhuman powers while in this world and their ages don't add up too, so that assumption might be wrong. I just find the trio Bernhardt, Henri and Malik to be mysterious outliers. Their powers are superior to Chosen that have thousands of years of mutation or multiple cycles of experience. Mind you they don't even get selected to be Chosen, not sure how they avoided that or avoided the eyes of the Apostles. No way in hell they can be that strong without having some kinda insane background. Henri's background at least seems to be connected to the vestige(a dead human civilization) and they refer to him as the ultimate weapon that can contend with the Apostles, so i guess he is a reincarnation or he found that weapon/artifact and became strong.
Is either a dream created by Glae, or Malik is on a research mission on Planets already invaded, used and disposed(but given his personality he most likely search for any possible human survivor), he along Bernhardt and Henri would be the only ones able to carry on such task alone(safely) just needing Nico drooping them on the proper star system.
But no, Malik and Bernhardt are not from a previous cycle, their strength is an outlier yes, but on the latest update, the Silat(MC's mother monster species)mention that the Great Queen of the Sky Humans, despite being initially a Spawn, grow up to be something else, something without definition, Malik and Bern are probably the same, more or less.
About Malik talking to his Brothers/Sisters, those could be anyone, though i'm leaned to believe they were other members of M-Division, Bernhardt after all does call Malik "Brother", and we don't know truly how close the Captains are to one another.