User blog comment:KurosakiHisana/Heroes and Monsters: How does your OC react?/@comment-24617443-20160210004232

I don't think anyone other than Weiss and friends would see Blake and Yang getting rekted but its a possibility, just not my OCs due to the circumstances. The dragon-grimm (Wyvern though :v) would be seen by probably everyone within Vale, and even if not you'll know its coming thanks to its roar.

Akiba and Summer would've gone towards the falling airship, and see Irondong terminating the Altesians and Qrow using his weapon's scythe form (Akiba: "Double-edged? That actually makes his scythe effective in battle.").

If your within the general vicinity of Weiss and/or fighting the mecha during that time you'd definitely see her summoning that arm + sword and Velvet being OP, which Pigmi and co., Scarlett and Nymbus would certainly be during the time.

Neo would been eaten by the Griffins during her descent, not unless she's still capable of using her semblance :v.