Stan Marsh

Stanley "Stan" Marsh is one of South Park's main characters along with Kyle Broflovski, Eric Cartman, and Kenny McCormick. He is the mature and the voice of reason, he is in love with Wendy Testaburger.
* Stan is the only one of the four who has never contracted a terminal illness, as both Kyle and Cartman contracted AIDS in "Tonsil Trouble" and Kenny contracted muscular dystrophy in "Kenny Dies".
* Stan has been shown to be an animal rights activist: he protected baby calves from slaughter in "Fun with Veal", joined PETA (though only to survive because if he did not do so, he would have starved in the wilderness) in "Douche and Turd", and headed the Whale Warscrew for a while in "Whale Whores".
* In episode "Make Love, Not Warcraft", the Warcraft executive tells Randy they need to get the sword to a great knight, by the name of 'LUVS2SPWGE'. However, at the start of the episode, when viewing Stan's game screen you can read Stan's character name is "Staniscool".
* Before Season Four, Stan was never seen without his hat, even when he was in bed.
* Stan is the last one of the four boys to have a supernatural power at one point. Kyle has disappeared and briefly became an omniscient being by studying existentialism in "The Tooth Fairy Tats 2000". Cartman has the ability to see and hear ghosts, and the ability to fire electricity at people in South Park: Bigger, Longer & Uncut. Kenny has had the power of immortality throughout the series. Stan obtains momentaneous powers, like flying, apparent telekinesis/superforce, and projecting fire from hands and mouth, when Satan possesses him in order to fight Beelzaboot in "Freemium Isn't Free".
* Stan has said "Dude, this is pretty fucked up right here" on at least three Christmas specials: "Mr. Hankey, the Christmas Poo", "Merry Christmas Charlie Manson!" and "Red Sleigh Down". He says these when something strange happens. In "Mr. Hankey, the Christmas Poo", he says it when Mr. Hankey appears. In "Merry Christmas Charlie Manson!", he says it when him and the others go to celebrate Christmas with "Charlie Manson". And in "Red Sleigh Down", he says it when Jesus is shot by an Iraqi.
* Stan has a somewhat stronger digestive system than many others do as shown in "Dead Celebrities" since he is able to eat at Chipotle without bleeding out his ass afterwards. Cartman even remarks that Stan has a "golden rectum of the gods".
* Stan has Asthma. In "Sexual Harassment Panda", Cartman takes Stan's inhaler.
* Stan's anime counterpart from "Good Times with Weapons" bears a large resemblance to Capcom's character "Ryu" from Street Fighter.
* So far, Stan is the only one of the boys who has not shown any gender-swapping tendencies. Cartman was shown dressed up as Britney Spears in "AWESOM-O", Kyle had a female avatar in "Make Love, Not Warcraft", and Kenny dressed like a princess in three of the last four episodes of Season Seventeen and South Park: The Stick of Truth.
* As of "201" Stan is the only one of the four boys who does not have a redheaded parent.
* Stan is depicted as a jock by the goth kids in "Breast Cancer Show Ever".
* Stan is the only one of the four boys who don’t forget the "Oh my god, They killed..." quote about him.