The Angels.
Just as Sam left to treat the injured Valkyries, the Nephilim army began making its move. Some of them conjured their weapons and coated them in their force field, going ahead first. The few left behind began constructing a number of much more complex creations; large aircrafts and battleships, giant monsters and beasts, then there were the robots. Lots and lots of robots.
[WAHOOOO!!!!] Juni's excited exclamation came from her blue robot as it craned its neck to watch the spectacle above. She had to quickly retreat to avoid being caught in the fire, but as the Nephilim began wreaking havoc through the Black Stone Army she began to feel the need to rejoin the battle herself.
"We can't let them take all the glory, can we?"
When she heard the voice, the blue giant turned its head and faced the speaker. Trenta was there, floating beside it with a smirk on her face.
[Let's go!]