Velma Dinkley (Diagnosis: Obsessive–Compulsive Personality Disorder)
Not to be confused with
Obsessive Compulsive Disorder, which is a high anxiety disorder that causes bad thoughts and compulsions and what not. No, OCPD is when everything needs to be just so. It has to with order, rules and expectations and this causes anxiety when things are out of a certain expected order. This doesn't mean that Velma expects everything to be in a straight line, just that she expects things to be how she expects them to be. Out of all the gang though, having OCPD and choosing to solve mysteries for a living isn't actually a bad thing.
You see, while it is a disorder, Velma shows that having a certain order to things in life helps you understand what is out of place and is able to provide her with a keen view of the unseen clues. Velma is very adept at solving puzzles and putting together the pieces, due to her expectations of the order of things, and her constant anxiety that something is amiss. Along with Fred, Velma is the primary case solver and leads the Mystery Inc. gang in being the one to pull the "great reveal" at the end of each episode. Her behavior clearly teaches to have a greater understanding of the world through having a less than flexible attitude towards it. It's an interesting conundrum, but if you think about it long enough it makes sense.
ref:
Psychology of Cartoons - Part 1: Scooby-Doo | WIREDhttps://www.wired.com › article › cartoons
Which Scooy-Doo character do I relate most to? Scooby.