War Machine
Abilities: Rhodey doesn't have any powers, and he lost the use of his legs in "Civil War." In battle, he uses an iron suit made by Tony Stark that's largely equipped with machine gun-style weapons and explosives.
Power scale: 3. War Machine is a valuable Avenger because of his heart and courage of conviction. His weapons can be very handy in a large fight, as we saw in the Battle of Wakanda — but they're honestly primitive compared to the types of blasters we've seen come from space, or from Tony's suit. It's not like just anyone off the street could operate the suit, but without Tony's help, War Machine can't improve his own technology or evolve as a superhero. And as far as we know, he doesn't have any hand-to-hand combat skills.