Bia's second form
Another enemy considered a mini boss in Vanquish. It is very dangerous
Bia's first scorpion form
because of its attacks and the ability to fight on either its hands and legs or just its two legs. When on its hands and legs, its shoots at Sam and also swings with its tail. On just its legs, it detachs its tail and swings it violently when near.
They are only three to fight in story mode. The first one is in Act 2-6 Stronghold. The other two appear in Act 4-2 Brink. In terms of weapons, an upgraded LFE gun is your best bet.