Seymour is definitely the good guy in this game.
While Ed and Molly use Lena, pay her like she is a child in China, manipulate her by making her do a drawing session for free, Seymour pays very well for a few hours of work not including bonuses, the neckless and the undergarments.
Also, Ed and Molly take advantage of a mentally crippled person named Perry and make him work for free. These two scumbags are considered to be "good people".
Seymour is a known philanthropist and helps people he dont know, he supports local artists like Axel and Ian, Pays for their drinks at The Shine, trying to help Ian and making him a wonderful offer and goes to see Lena plays and sings. Despite being assaulted with a beer by some fat ass communist, he is not pressing charges and forgives the misguided commie.
Also behind the scenes Seymour is trying to modernize this shit little town despite the noisy plebs.