Renet is a character appearing in the Turtles of Grayskull comic series. She is an Apprentice Timestress and student to Lord Simultaneous.
As the battle starts between the Turtles, the Masters of the Universe and the unified forces of Dimension X, the Foot Clan, and Snake Mountain, Renet begins a narration from her viewpoint. Renet says she should have known, because she had spent time with the Turtles and had literally traveled to the past and the future and across the universe multiple times with them. Renet knows the world around them is fluid and thin and they cross other paths all the time.
Continuing, Renet says that He-Man is the bearer of the Power of Grayskull. That marks him the center of the center of the universe. Around him run all threads and Renet knew she had to stop the Ninja Turtles and He-Man threads from getting all tangled up. As the Renet speaks, He-Man finishes destroying everyone, good and bad alike. Then he slowly transforms back to his original form. Sorceress clutches her head and begins to cry. He-Man drops his sword and falls to the ground, the carnage all around him. Renet says that knots in the universe cause all kinds of trouble, but mostly pain and death. And, if it weren’t for the fact that someone stole her scepter and she had to use Lord Simultaneous’s ancient prototype, she would have stopped the knots from forming.
She hovers above He-Man and the killing field, watching as he suffers. Late again, Renet says she does not want to be there when Splinter finds out, so she tells the scepter to take her away. Scepter responds that it needs a place and she tells it before all of this began, not wherever the knots got knotted. Scepter responds that “not knot” is a nonspecific place and it is guessing. Renet begins to fall, shouting at the fact that it's ‘guessing’. Renet lands with a hard thud, flips over and loses her headdress. She stands up as Scepter announces their arrival and is stunned to find herself in a jail cell. She fusses that she didn’t give a specific place so it dropped her in prison. In the cell next door, Raphael says he feels like he’s heard that whine before. Renet looks through the barred window and sees all four Turtles there, each using an atmosphere converter. A smitten Michelangelo is happy to see her. Raph asks if she’s there to rescue them, because he has thoughts and Leonardo tells her they went to space and found out the hard way that they have enemies here.
Before Renet can get her scepter to do something to help, the Turtles are hauled away to a sports arena on the Triceraton Homeworld. After they are introduced to the crowd, their opponents, Triceraton All-Star Team are introduced. To make things interesting, another opponent is added to the mix and to Renet's dismay, it turns out to be He-Man! With a gasp, Renet realizes they are in a Time Loop.