Matthew Inman created a new error page featuring green mutant critters chomping on servers. Tumblr adopted the little monsters for its official error page. The Tumbeasts already have their own Tumblr and Twitter pages. Vote here for which site is down mascot is better: Tumbeast or Twitters Fail Whale. The Oatmeal artist Matt Inman also weighed in, and he was hilarious but kept out all the words that would offend moms everywhere.”]
Source: https://cnnmoneytech.tumblr.com/post/2941398343/tumblr-adopted-tumbeasts-prompting-a-fun-story