Hal Jordan's enemies: Parallax (Powers)

Possession: The host of parallax gets a tremendous amount of energy and power by just feeding off fear.

Energy constructs: creates constructs just like a sinestro corps lantern

Mind Control: can install fear in others to be able to control them.

Superhuman strength and speed: When Sinestro released Parallax upon Hal jordan, Parallax quickly gave him a beat down without any damage.