Designated Villain: Krudsky is treated like crap by both the gang and Fairy Princess Willow even before he does anything villainous. In fact, it's this that motivates his evil plot in the first place. Yes, he was a Jerk Ass, but even so...
Apparently he was treated like crap all his career, and Scooby and Shaggy's payback was the last straw. Making him a Jerkass Woobie.
Take That: Double-Edged here, the Mystery Machine while monstrous crashes into a stand of Scrappy Dolls
Is this a direct statement or saying that only monstrous versions of fans would ever on purpose attack Scrappy? In this situation he would have been the innocent victim, well played writers, well played.
Unintentionally Sympathetic: Krudsky may be a jerk himself and doesn't even think twice about causing havoc with his new power, but him being treated like a joke for his entire career, having his act ruined and getting put out of a job by Shaggy and Scooby solely because he doesn't allow dogs, and getting harassed by Fairy Princess Willow without even doing anything to her, it's hard to not feel a little bad for him. Heck, you might even end up wanting to take his side!