Retribution came wearing slippers
The mech suddenly fell out of the sky and into the army of Void Dwellers. Mental exhaustion was setting in, so Z was slow to react, but fortunately, he managed to avoid getting hurt. He used his shield as cover as he slammed into one of the large Void Dwellers and stabbed his spear in its body and used it for support to slow down his descent.
Just as they had suspected, the strange robed figure teleported them to another battlefield just as they began to thin the first army. He did not even wait for the fight to finish. The moment the number of demons they were killing was reduced, he appeared again and teleported them to another monument, disappearing in the process.