The mouth isn’t right. It has 4 mandibles with webbing, clearly pointing a reference to the Predators without their thermal mask.

STAY BACK... YOU EIGHT LEGGED FREEEEEEEEEEEAKS!!!!!!

Slow. Keep your distance and they are easily managed. If they get within striking distance they will spray a slowin web, then converge on you. Use ranged weapons to dispatch them

Should be able to walk on walls and ceilings, and the megalania shouldn't.