HA10

The tired creak of rock grinding against rock was his first warning. Blake's gasp was the second.

Neither filtered through fast enough to react to and the third warning – and confirmation – came as a huge stone fist collided with Jaune's side and sent him skittering down the slope like a bowling ball. He would have gone the whole way but for Yang, who broke his fall by virtue of him crashing into her legs and knocking her over like a skittle.

"Whoah!" Yang fell with a mighty crash. "O-Ow, Prof? Why?"

Tangled on the floor, Jaune groaned, "I think I pissed off the rock thing…"

"The ro-?" Yang looked back. "Oh wow. Uh, how did we not realise that was a Grimm?"

Probably because the mask had been on the inside. Now standing and having drawn itself out the ground, the thing came to an impressive ten or so feet, even hunched as it was with its rock-fists dragging on the floor. The red lines pulsed across it and a viscous black ooze seemed to be dripping from some pores on its legs and seeping into the ground.

[...]

The Golem, if they decided to call it that, didn't last much longer. Beset on all sides, it tumbled when Yang blew a hole in one leg, then fell the rest of the way when Ruby sliced what would have been the tendons in a human body on the other side. Even though it lacked muscles, the weight imbalance caused it to topple. Neo then darted on top if it and stabbed down into its eyes and face over and over, hacking away at the thing while Taiyang hammered at its chest. Under the dual assault, it fell and crumpled to rock – then dust.