The Scorpion mechs are massive Titan class mechs that have many defenses as well as armaments. They have a large mouth that will crush almost anything, a tail which is capable of shooting lasers from it, and many large appendages with bladed attachments Although it is very large it is small compared to other Titans, But it is a newer and more advanced Titan.
They are currently being constructed at a dam and deployed as a deffensive measure at Pyramid (possible eels where used as well). They are extremely effective, and can easily overwhelm larger prey in numbers.
In game appear a total of nine of them. All were destroyed by Leviathan's shoots or his final self-destruction.
They appear to be the last line of defense of Pyramid.