A significant enemy of both Chacha and Sabu is Raaka. Raaka was once a dacoit who was chased by cops. Trying to evade the cops, he hid in a building and a gunfight ensued. When out of ammunition, he tried to commit suicide by drinking poison he found in the house he was hiding in. Unknown to him, the house belonged to a great knowledgeable sage called Chakramacharya, who had developed a potion of immortality. Fearing it would be misused, he had labeled the potion as "Poison". Raaka mistakenly eats the immortality potion believing it to be poison and kills Chakramacharya who tries to stop him from doing so. Once he notices he has become immortal, his mischiefs increase and he no longer remains a mere dacoit.