Scholars disagree over who exactly the son of man figure is in Daniel’s vision. Is he a supernatural being—a great angel like Michael? A human individual, perhaps a messiah? Or is he a symbolic person representing the suffering saints of the Most High? I lean strongly towards the latter interpretation because it fits the story that is being told. But I would also argue that the story being told, whether here in Daniel, or in 1 Enoch, or in the Synoptic Gospels, is much more important than we generally suppose.
The four destructive beasts which emerge from the sea are, according to the interpreting angel, four kingdoms (Dan. 7:15 LXX). The little horn which appears on the head of the fourth beast is a particularly nasty king. He will “speak words against the Most High”; he will make war against the “holy ones of the Most High” and rout them; he will seek to suppress the Law (7:21, 25 LXX). But the “ancient of days” will sit in judgment. The beast will be destroyed, and the verdict will be given for the “holy people (laōi hagiōi) of the Most High”; and “the holy ones gained possession of the seat of empire (basileion)” (7:22, 27 NETS).