Bug Enemy concepts

BUGS BUGS BUGS BUGS BUGS! A lil concept art practice! Bug 1 is a tank but extends into a projectile-shooting lad in his second form. Hit him before he hits you!
Green Baby is fresh from his pupa, but over the course of the fight his wings dry and can be used to fly and as slashing weapons.
Last image is a headcrab/facehugger type. Pillbug weaves its scillia through the soft tissues and into the brain and controls the host with electrical impulses. Its painful to wear, but even worse when the parasite is torn off-- tissue damage and endorphin withdrawal kill the host.