These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The Scrappy: Trevor, partly because he seems to be nothing more than a bottomless resource for fart jokes and disturbing gross humor. Also partly because he bullies Eric and the others sometimes (and KNOWS it too) despite calling Eric his friend; making him look like a Jerkass who makes us wonder why the gang still hangs out with him. Not to mention Trevor's rather disgusting interest for his own nose.....
Vana herself for treating Eric like crap most of the time.
The Woobie: Eric. He has no parents, Maxum Man abandoned him, and everyone in town beats him up (to the point where they made a holiday about it). He isn't even allowed to see his true love, Mandy Struction. You can really sense the writers' sadistic tendencies toward him.