Ozpin was a collector of knowledge and relics, one such relic turns out to be connected from another dimension, sent there as a test subject When the Fall hit Jaune decided to take matters into his own hands for once and took the burden from Pyrrha, he knocks her out and sent her to safety as he climbs the tower to face the enemy to but the evacuation enough time. He found a shining object when he came across Ozpin's office it appeared to be a Grenade of some Sort so he picked it up and faced Cinder with it doing a Kamikaze charge he detonated the Grenade taking Him, Cinder and the Grimm Wyvern out. What he didn't know the Grenade was a Transportation device HALO belongs to 141 Industries RWBY belongs to Rooster Teeth All rights reserved