I thought at first he was Oceanos, but then I noticed that every other god presented is a major god… so I think maybe he could be a new one. We now know there’s going to be new gods added as DLC, as this suggests:
Overall I think I love everything from the new trailer, except maybe for the wolf spirit next to Loki, it just feels weird imo. I absolutely love the titan designs and I’m glad they stayed true to most of the units and buildings original designs. I am happy to know that the game will still feel like aom.