Bumpy Jonas

Bumpy Jonas was a mobster who ran a Harlem crime family in the 1971 movie Shaft and its first sequel, Shaft's Big Score (1972).

He was portrayed by Moses Gunn.

Shaft
We first see Bumpy's villainaries in the opening scene of the first one, when two of his hitman try to kidnap Shaft (although Shaft justifably thinks it's an attempt of his life) to coerce him into a job, which will be to save his daughter. However, he blurs the line between pure villain and on an off. Mind you, he still is a villain. He hurts innocent people, such as "sweet talking a man's lady while he's beating him to death" as Shaft puts it. But his role in saving his daughter inadvertently brings good, nevertheless, and prevents a race war from happening. He lies to Shaft and tries to pin the crime on Ben Buford, a member of a Black Panther called the La Mundas. It's revealed he lied. He even stabs Shaft in the back and snitches him to the police, as Vic, Shaft's boss, tells him.

Shaft's Big Score
In the first sequel, he is shown to be at war with a white gang headed by Gus Mascola. Kelly is a backstabber, on one hand siding with Shaft and the black cause, in another hand, betraying his principles for money and siding with Mascola. Mind you, his evil is used for good (kinda like how in the Bible, God uses things meant for evil but turns them to good) - his actions also apparently stop another race war. This doesn't contradict his villain status. His motives are purely for himself.