Aye.Breda Ba.88 Lince
Quite possibly the worst combat aircraft to see service. In North Africa, after fitting it with weapons, armor, and sand filters for the engines, it barely was able to reach half its stated speed, struggled to even take off, and it was reported that they had to take off in the direction of their target as they didn't have the speed to execute a banking turn. They were eventually used as decoys for enemy bombers.