The one Rex punched splatters and reforms, with a third smear slowing drawing itself together. The creatures split up, circling Ran and the scientists as the nanites in each individual bloodbeast get to work replacing their aqueous bulk. Soon they're both just as large as the original. Tearing them apart doesn't work, obviously. Maybe, you know, actually CURING them would...

The both bear down and growl, but the lunge is interrupted by a flash of lighter red and a startled gurgle as one of the beasts is violently pulled back and slammed up against the wall by...

a bunch of tendrils?

While the one is bound up against the wall, the other regains its treacherous courage to attack the nice pile of squishy humans and the fox girl.