Orson seems to be a cool goth vampire, but unlike his parents he's more modern then them. He is nerdy, shy, and curious even though he does have a few creepy moments, and has a affection for Hannah who is his first human, friend, and crush.
Orson is seen with large, circular-framed glasses and a red-striped sweater with a skeleton tank top layered over. He has pale skin and red eyes, as is typical for vampires.
Orson appears in the second film along with his parents at Scary Godmother's house to see if she needed anything before going to the store, when seeing Hannah there, Orson forgets that vampires need to be invited in homes and runs in only to be pushed back out by a force that keeps vampires from invading houses.
Hannah Marie : Hannah and Orson are best friends and are always with each other a lot at Scary Godmother's Halloween Parties since they're the only kids there. They both seem to have secret crushes on each other shown in both films and in the books. Hannah is the first human Orson meets, and they quickly become friends. Through out the whole party, they're seen around each other, not one seen without the other.
Check out Orson/Gallery Here.