Younes

A human malware specialized in bugging your code, he has a special satanic spell that could be casted in any code he sees.
He conmes to you, he put his hand behind the chair and the other hand on the table corner;

Younes: What are you doing?
Me: I am writing my backend code

Younes: That's great (Actually he's scanning the code to put a bug in your code)
One day later, you'll find a bug in your system and good lock solving it.