Dr. Mohan Sinha is Motu's father, a professional astronomer on a mission to unite extraterrestrial
civilizations with Earth. He appears in Motu Patlu in Alien World.
He invented a telepathic device allowing him to control and alter the minds of any being by simply staring into it's eyes, and was abducted by enigmatical personages, or in short, hostile aliens.
In Motu Ke Pappa Ka Bungalow, he looks a bit different.