He.

Matthew 9:34
But the Pharisees said, "It is by the prince of demons that He drives out demons."

Matthew 12:24-30
But when the Pharisees heard this, they said, "Only by Beelzebul, the prince of the demons, does this man drive out demons." . . .

Mark 3:22-30
And the scribes who had come down from Jerusalem were saying, "He is possessed by Beelzebul, " and, "By the prince of the demons He drives out demons." . . .

John 7:20
"You have a demon, " the crowd replied. "Who is trying to kill You?"

John 8:48, 52
The Jews answered Him, "Are we not right to say that You are a Samaritan and You have a demon?" . . .

John 10:20
Many of them said, "He is demon-possessed and insane. Why would you listen to Him?"

Beelzebub.

Luke 11:18, 19
If Satan is divided against himself, how can his kingdom stand? After all, you say that I drive out demons by Beelzebul. . . .