The Magic Pen is the 14th episode of Season 4.
A witch who just happened to be passing by on her broom loses…a magic pen. And everything drawn with the pencil becomes… real ! Joey steals it and uses it to draw an army of men that he is going to send to attack Oggy. Argh! Is there a magic eraser?Official Synopsis, 
Witch wanted to go around the world.
But the witch saw a cloudy town. The witch's purse was open where the magic pen fell to Oggy's house. One day, the cokroach, Dee Dee, play in the field. However, Dee Dee saw a pen then he bites it. After it, Dee Dee can't eat eat, then he threw the pen. The pen drew something that Dee Dee noticed it. Dee Dee walk through the pen writing trail and slide down. Dee Dee draw a sausage and eat it. Marky had noticed Dee Dee and they drew random things while fighting. Joey saw the roaches and stole the pen.
- ↑ Oggy and the Cockroaches - The Magic Pen (S04E14) Full Episode in HD (published by OGGY on Apr 14, 2015, on YouTube. Accessed Mar 30th, 2019.)