Emet-Selch merely has to thrust his palm upwards and a magical barrier shields himself from the fire raining down. He could technically shield his new robot ally as well but, well, then all those lasers it's attempting to fire back at Katsuki might hit him instead.

Fortunately for the younger man, this mage doesn't seem to be planning to add his own firepower to the fray just yet.

"Curious power you have there, boy," he calls out from his shelter. "Explosive power rather than fire itself? And such precision of movement. I've never seen anything like it."