Snoopy: Marries Fifi and then has 20 puppies (Beagle cross Poodle). Then they find out they'll all live forever.
Charlie Brown: Good ol' Charlie Brown becomes a bit more social (thanks to Lucy's crabbiness) and with Peppermint Patty's help, he is now a manager of world famous Baseball team. He married Peppermint Patty and they now have three children.
Sally Brown: Stopped acting like a "fan girl" around Linus. He finally asked her to the movies where they had their first kiss and started dating then Linus proposed to Sally with one of Snoopy and Fifi's puppies on her eighteenth birthday.
Lucy Van Pelt: At the age of sixteen, she's become a tiny bit less crabby and slightly more relaxed. She then becomes a professional psychiatrist and helps Linus with his blanket habit (while being crabby). Schroeder asked her out while they boy was playing "Moonlight Sonata" and kissing her on the cheek on Beethoven's birthday.
Linus Van Pelt: At around the age of fourteen, Linus had given up his security blanket and now only uses when he is really feeling insecure. He got married at the age of twenty-one and is in the college that the rest of the Peanuts gang are in.
Peppermint Patty: Patty stayed the same, bought her way into the college everyone else goes to and gets married when she was twenty-two and is the coach of a famous Hockey team.
Schroeder: He has become much calmer to Lucy and eventually marries her. He has become a composer and a world-famous pianist who played at the weddings of the Peanuts gang.
Franklin: After his many interactions with Marcie, they finally get married and have two children.