Knut

Knut has yellow skin and he wears a red tracksuit. He is bald, has bushy light brown eyebrows, is quite large and has long sideburns that ends at his jaw. He also needs to wear glasses but does not because he does not like how they make him look.

In the Nick version, Knut had visible chest hair, slightly skinnier, loose tracksuit and a wrinkly face.

Knut's ogre appearance is still visible but with a more human appearance. He is much shorter, less large and has light brown hair. He retains his sideburns and wears blue, oval glasses. He has light tan skin, wears a gray and maroon jacket, light blue jeans and maroon sneakers.

Knut attacked Stella in "An Unexpected Event" in order to steal her ring for his mistresses. When Bloom discovered them she tried to help Stella and used her first spells on him and his ghouls.

When Bloom returns to home with Stella, explaining the situation to her parents, Knut returns to the Trix. He reports of his progress that ended in failure. Though his mistresses were furious at his failure, he redeemed himself by telling them his new plan: using a hunter troll to hunt them down.

He returns to Gardenia with his troll and ghouls, trashing Bloom's house in another attempt to steal the ring but failed again thanks to the intervention of the Specialists. He escaped and his troll was captured.

In the second episode, he was in Magix City trying out new glasses when the Winx walked by. He runs out of the glasses store and alerts his mistresses. When Bloom was discovered eavesdropping on them and she was frozen, her friends came to rescue her and Knut was ordered by the Trix to attack them but failed once more.

In The Black-Mud Swamp, he alerts the Trix that his captured troll will be taken to police by Red Fountain's Specialists. The Trix, particularly Stormy, feared that the troll will snitch on them and proceed to eliminate it.

On the day of Stella's "date with Prince Sky" and when she was acting strangely, trashing the Winx's apartment and escaping through the window after calling Bloom a thief, the Winx decided to find the real Stella. In disguise, he tricks by giving them the directions to the Black Lagoon, Stella's supposed date place. After the girls successfully find their way, he leads them inside, the door closes on them and he runs down the staircase and disappears. When the Trix finally reveal where Stella is and their goal, Knut is returned to normal by Darcy.

In Mission to Cloud Tower, Knut wakes up to a loud explosion caused by the Trix's attempt to take the ring's power but failed. He went back to sleep when Stormy casts a spell to make him forget about it. After that, he is ordered to clean up the mess and complains about it. He leaves the room when the Trix call him to meet up with them.

In later episodes, when the Trix finally gain the Dragon's Flame and assembled the Army of Darkness, he realizes how dangerous they are and fearing for his life and the good of the magical dimension he joins the other magical schools to defend it.

In "Rescue Misson," he meets Aisha as she walks out of the infirmary. She is scared by him.

In "The Mysterious Stone," he is the DJ at the party in Alfea.

In "Race Against Time," he gives Oleana ice cream in the hallway.

In this season, after the princess ball when Stella is turned into a monster by Chimera, he develops a crush on her monster form. And when she is talking about Brandon, he thought she meant himself and tried to "comfort" her. Although, Stella instead gave him lessons on how to be proper in order to court a lady. He tries doing proper postures, in a strange way, before falling onto the floor, Stella then says goodbye to him when Flora tells her they are ready to depart for their mission.

Knut attacked Stella in order to steal her ring for the Trix. When Bloom discovered them she tried to help Stella and used her first spells on him and his ghouls.

When Bloom returns to Gardenia with Stella, explaining the situation to her parents, Knut returns to the Trix. He reports of his progress that ended in failure. Though the Trix were furious at his failure, he redeemed himself by telling them his new plan: using a hunter troll to hunt them down.

He returns to Gardenia with his troll and ghouls, trashing Bloom's house in another attempt to steal the ring but failed again thanks to the intervention of the Specialists. He escaped and his troll was captured.

When the Trix finally gain the Dragon's Flame and assembled the Army of Darkness, he realizes how dangerous they are and fearing for his life and the good of the magical dimension he joins the other magical schools to defend it.