The Warden of the Internet is the villain in the Regular Show episode, "Go Viral." Her appearance is that of an old lady inside a computer screen. She lives in a part of the internet that acts as a sort of prison for people who make viral videos. She hates viral videos, which she sees as "diseases," and believes that the internet should be a serious tool used for writing research papers and communicating with people. She uses a ray to suck viral video makers into the internet, where they are forced to reenact their videos over and over again for all eternity.
When Mordecai and Rigby accidentally send Pops to the Warden's domain while trying to make a viral video to win a bet with Muscle Man, they follow Pops into the internet, where they learn that the Warden wants to imprison the three of them in their video. When Pops, Mordecai, and Rigby free the other video makers and attempt to escape with them, she attempts to hold Pops back. However, Wedgie Ninja, one of her prisoners, gives her a wedgie. This allows Pops to escape and causes her to explode, killing both her and Wedgie Ninja.
- She is considered to be one of the most evil villains in Regular Show because, while some of the villains (such as Death and the coffee guy) had valid reasons for their villainous acts, the Warden seemed to be genuinely evil.
- She is one of the few villains who was not resurrected by Garrett Bobby Ferguson Jr. in "Exit 9B."