The Roc at the north and the Sand Apparition in the south. These two SS rank monsters are vastly different from the other SS rank monsters because they have legendary status tied to them. The only SS rank monster close to their power would be the defeated Blood Hungry Crimson Tiger.
The audience did not know what to focus on first as the two battles were very interesting due to the people that joined. The north side has the Russian, German, Philippines, and Sweden's national teams against the Roc. The south side has the Japan, Ukraine, France and United Kingdom's national teams against the Sand Apparition.
The battle in the north side is basically just them pinning down the Roc so that it will not fly away. The person that is pinning down the Roc is definitely the one that has the most contribution in the fight. His chain is keeping the Roc pinned down to the ground as he buried the handle to the ground while Anastacia used earth hardening magic to secure it.