Well, there are many cartoons out there with purple bad guys. It might be a character from a popular kids' show or a lesser-known indie cartoon. It could be hard to pin down without more context.
Maybe it's because of his evil deeds and the way he causes trouble for the heroes.
I don't know for sure. It could be from a wide range of cartoons. Do you remember if he had any special powers or was part of a particular group of characters?
The bad guy in a cartoon can range from a magical witch to a evil robot. It all depends on how the creators of the cartoon envision the antagonist to drive the plot forward.
The main bad guy in the Popeye cartoon is Bluto. He's always causing trouble for Popeye and Olive Oyl.
Well, one of the notable villains in Bravestarr is Tex Hex. He causes all sorts of chaos and problems for the heroes. His evil schemes keep the story exciting.
The main bad guy in the Aladdin cartoon is Jafar. He's always up to no good and trying to stop Aladdin's adventures.
The French bad guy in the cartoon could be anyone. It might be a character who is shown as being selfish, cruel, or causing trouble for the heroes. Sometimes, the 'bad guy' status is defined by their actions or motives within the story.
The main antagonist in the Mulan cartoon is Shan Yu. He's a fierce and menacing leader of the Huns.
Gargamel is the main bad guy in the Smurfs cartoon. He's always trying to catch the Smurfs and cause trouble for them.
The main bad guy in the Mulan cartoon is Shan Yu, a fierce and powerful leader of the invading Huns.