Ralph is a blue ghost that changes colors when scared captured by the Ghostbusters of various dimensions.
Ralph manifested in Queens but was soon captured by the Ghostbusters. Ray Stantz and Peter Venkman deposited Ralph into the Containment Unit. Ralph was confused and afraid of his new home. Samhain felt Ralph's fear and assured him he was not alone. He explained to Ralph he got trapped and instructed him to take a moment to acclimate in order to see the others. Ralph's fear escalated to unprecedented levels once he realized he was going to be stuck in the Containment Unit indefinitely and began glowing yellow instead of his natural blue aura. Samhain suddenly became overwhelmed by the fear. It turned out to actually be the Boogieman. In order to gather strength, he posed as Samhain to invoke fear. The Boogieman could not resist the strong allure of Ralph's humanity and fear and ingested him.
A version of Ralph was chased by Jillian Holtzmann and Patty Tolan through Queens. It detected an open portal generated by the Interspatial Teleportation Unit and made a beeline for it. Kylie Griffin closed the portal just in time and prevented Ralph from crossing over. Unaware of what transpired, Holtzmann and Patty fired at it. Ralph dodged the streams and Holtzmann's blew up a parked car. Holtzmann insisted the ghost did it with its psychic powers. Ralph turned and charged them. They got out of its way but Holtzmann had enough. She pulled out one of her Proton Pistols and blew Ralph up. Ralph's ectoplasm rained down on them. Patty reported their latest incident to Abby Yates over the phone.
- In a frightened state, Ralph turns yellow.
- Ongoing Series
- Ghostbusters 101