Velma takes the cake. It attempts to be a reimagining of the Scooby Doo series, but fails drastically. The characters don't look anything like they do in the Scooby Doo cartoons and their personalities are completely different. It's like they were making a completely different show, figured that nobody is gonna care to watch this, then named everyone after Scooby Doo characters to add some familiarity to it.
Scooby Doo isn't even in this which a good thing. I'd hate for him to suffer the same embarrassment of this atrocity.