Brain is just his Welles impression. They even do a parody of the pea commercial on Pinky and the Brain https://www.youtube.com/watch?v=7uWW--w4SRs&t=6s https:/

Brain is just his Welles impression. They even do a parody of the pea commercial on Pinky and the Brain https://www.youtube.com/watch?v=7uWW--w4SRs&t=6s https://www.youtube.com/watch?v=7uWW--w4SRs&t=6s