Class 4 are aggressive if you get to close to them,though they will turn a blind eye to a quickly moving creature that stays a fair distance of an estimated 95m away from their head

Name:DR-25/AF CodeName: Scorpinox (Thank you to Narmikaze for the suggestion)
Looks:

Attacks/Abilities: Stabbing,Clawing,biting,running on land,give mild poisoning when he bites or stings
Diet:the monsters Boulders and Nightlights
Height:28ft
Length:59ft
Weight: 21tons
Edible:Yes,is said to taste like lobster/crab