Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits. Anti-spam check. Do not fill this in!==Origin== Ron Lithgow was a speech writer on a camping trip when he was kidnapped by aliens. They transformed his flesh into an impenetrable concrete like substance and though he escaped, he was forever changed into Concrete. Summary: Please note that all contributions to the Superhero Wiki are considered to be released under the CC-BY-SA Cancel Editing help (opens in new window) Retrieved from "https://superheroes.fandom.com/wiki/Concrete"