Yes, Lawful Stupid has it's Evil counterpart. A general trait of Stupid Evil is doing evil things for the sake of being evil, rather than because they are (morality aside) an easy or viable way towards wealth, power or to achieve some personal goal such as revenge. Especially when a non evil, or less evil way of doing things would work better.
Examples of Stupid Evil
Joffrey Baratheon
He sends an assassin armed with a Valyrian Blade (an unusual weapon for a sellsword) to kill Bran Stark. And when that fails, iut causes the Starks to suspect the Lannisters.
He kills Eddard Stark, therefore sparking an unnecessary and very costly civil war (and this was against what his family had planned).
He chooses to ignore his duties and the welfare of his people in favor of satiating his sadistic behavior.
He has one of his Kingsguard to murder his Uncle Tyrion in the middle of the battle of blackwater instead of just simply poisoning him (as Tyrion pointed out).
He calls Tywin a coward. Luckily for him, they were related. Because if he wasn't, he would have been struck down.
Cersei Lannister
Any Captain Planet villain
Some followers of Chaos such as Firaeveus Carron can prove to be this most of the time.
Causing unnecessary murder or tragedy on other family for his own satisfaction(he is a sadist btw).
Randomly pissing off Neuro, a real demon and starting the most gore, violent arc that Jump had ever published.
Claiming his own ideal of evil is the "true evil" but rather just a cheap, rotten flavor of a puzzle in Neuro's tongue.
Also, his family has done the same thing as he did for many generations and claiming that this "evil" has evolve them into more human than anyone else.
This article is a stub. You can help 1d4chan by expanding it
This article is a stub. You can help 1d4chan by expanding it
This article is a stub. You can help 1d4chan by expanding it