Mr. T.V. Sett is a television who appeared in Muppet Magazine issue 18. He has a similar appearance to the monster TV set that attacks a viewer in the "Muppet News Flash" segment of The Muppet Show episode 119.

The old Henson.com "Featured Creature" refers to him as Opie AtetheBox, suggesting this may have been a nickname used for him in the workshop.