Elf tribe
It was the tribe of non human with powerful Mana(magic). According to in Anime Queen of vitch said that some of them equal to her at strength. They were extinct but it seems like they still exists. According to her midnight of sun are the descendant of elf clan. It was also clear that they were Betrayed by human, and destroy thier clan.
Elf tribe Members
They were strong and powerful, now what we seen in anime, it's seems like the elf tribe who were die are now incarnate in human world in the form of humans like we have found, three of strongest member of licht, one was killed by asta and other and another one, she was save by other. One is still left and now we have found another one who is langris brother of brother fineral voice captain of black bull. If we see according to this it has a huge chances of that yuno is related to them or one of recarnation if them. That's why he has four leaf clover.
Leader of elf clan
He was strong and powerful that we have seen that, according to licht he was the leader of elf tribe and have five leaf clover of Asta and wield those two sword that asta use, first anti magic sword and second demon-dweller sword that can absorb any magic. And in manga he married to tetia, a human woman who is the sister of first magic emperor.
They are incarnate in human world again that's why licht is trying to get them together for some purpose which is going to revealed in upcoming episode.
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