雪莉·马什兰迪和莎伦·马什的女儿，，斯坦·马什的姐姐，(也是主要竞争对手)。雪莉被玛丽·凯·伯格曼，伊莱扎·施耐德，莫娜·马歇尔，现在的阿普莉尔·斯图尔特配音。她第一次出现在第一季的“象猪交配”中。
她脾气暴躁，经常殴打斯坦，叫他和他的朋友们“大便”（Turd）。她的原型是特雷·帕克的姐姐雪莉·帕克。
背景
似乎只有在戴上牙套之后，雪莉才会变的暴力而易怒。究其原因，可能是因为牙套让一个青春期的女生觉得很俗气且缺乏自我认同感，导致她常常迁怒于弟弟斯坦。没人知道雪莉在欺负斯坦，这是因为有父母在身边的时候，她时常表现的乖巧单纯，尽管曾经在父母面前推搡过斯坦几次，但雪莉也并没有因此受到处罚。
尽管斯坦一家的地位随着剧集的增长不断提升，雪莉仍然没有太多的戏份；在很多着重描写斯坦以及他们父母的集数中也没有包括她。在“当你老了”一集中，雪莉也没有出现在他弟弟的生日派对上，而是仅在剧集末尾，在父母离婚后正在打包行李时短暂出现，表现出难过的样子。
爱好
雪莉非常爱看电视，她喜欢的节目包括“吸血鬼猎人巴菲”和“老友记”：她也是罗素·克劳的粉丝，但这些都比不上她最大的乐趣：虐待斯坦。剧集中也曾经提到她很喜欢布兰妮·斯皮尔斯。在“无法上网”中，在她的房间里挂着马的海报和“Sadie Dakota”(捏他迪士尼的青少年喜剧“Hannah Montana”)的海报。她也十分迷恋歌手洛德，在相关的“皇家布丁”一集中表明她是一名女童军的小队长。
技能
雪莉在剧中表现的非常强壮，在"汉基先生的圣诞特辑"一集中甚至能够举起一整台钢琴并扔向斯坦和凯尔。在“象猪交配”中，她制服了正在大肆破坏小镇的斯坦克隆体。在“长水痘”中，尽管得了水痘住院在床，雪莉还是趁莎伦不注意的时候打倒了试图嘲笑她的斯坦。在“学前恩怨”中，男孩儿们无计可施的来寻求她的帮助以阻止特伦特·博耶特向他们复仇，可以证明雪莉单人的战斗力要比整个被博耶特打倒了的六年级生还要强。
音乐
雪莉的钢琴演奏和唱歌都相当不错，她的“我看见三艘船”被收录在"汉基先生的圣诞特辑"中，还有"猫之恋曲"中的"大便!"
犯罪记录
- 虐待儿童: 在早期的很多集数中，都可以看见雪莉打骂斯坦或他的朋友们，并叫他们“大便”。
- 纵火: 在中"视讯惊魂夜"，雪莉烧毁了兰迪买下的影碟出租店。
社会关系
雪莉似乎很少和朋友在一起。在"猫之恋曲"中，她有一个名叫斯盖勒·莫尔斯的男友，也曾在拉里·费根死前和他短暂交往过。据她自己说，没有同龄人跟她玩是因为自己长得太丑。不过在"猫之恋曲"中她同名为凯莉的朋友交谈。在"改头换面"中，她请求父母允许她和朋友凯莉和史黛西一起去女子摇滚之夜。
外观
雪莉常穿着浅粉色衬衣和深粉色的裤子。她有着凌乱的齐肩棕色长发，留着刘海。牙齿健康问题使她不得不戴着难看的牙套，因为如此她总是怒视别人，显出不快的神色。她有着明显的鼻音，有时她口鼻并用的粗重呼吸使得她发音很男性化且浑浊不清。有时可以看到雪莉穿着睡衣出场；上衣是深粉而裤子是浅粉。在有的特定场合中她会穿着粉色的裙子；而在葬礼上她会穿另一种款式相同但是黑色和暗红色的裙子。
个性
雪莉·马什充满了愤怒和仇恨，主要是由于她不得不戴牙套引起的。她最喜欢的发泄愤怒和仇恨的方式是殴打她的弟弟斯坦。她的愤怒也源于她长得不太好看，不管是否戴着牙套，这意味着在学校里没有人喜欢她。这个问题在"猫之恋曲"这一集中得到了探讨，她向卡特曼坦白了这一点。
除了在"猫之恋曲"中暴露自己脆弱的一面之外，在所有其他选择都已用尽后，雪莉对她的弟弟斯坦(通常是在他打出兄弟姐妹家庭卡之后)表示同情。一个很好的例子就是“学前恩怨”斯坦和其他人被特伦特·博耶特威胁要被杀，雪莉发誓要保护她的小弟弟，因为杀死他是她的工作。
然而，她坚持让斯坦坦白让特伦特想要杀他的谎言，这表明雪莉也关心斯坦成长的方式，并试图教他如何成为一个负责任的人。
家庭
斯坦·马什
斯坦是雪莉的弟弟。在早期的剧集里，早期的季节里，雪莉经常用身体暴力威胁她的弟弟，她会毫不犹豫地继续下去。雪莉毫不犹豫地将她的暴力行为扩展到斯坦的朋友们身上，在"汉基先生的圣诞特辑"中，她把一架钢琴把凯尔和斯坦都摔在了头上。
尽管雪莉的暴力倾向在后来的几集里逐渐减弱，但她还是在“无法上网”中反复地打他，因为她想到，如果他们不能再互相发电子邮件，她的网上男友可能会为她担心。到目前为止，这一集是她对斯坦的暴力行为被他们的父母注意到的唯一例子，兰迪跑过去告诉雪莉冷静下来。雪莉和斯坦可能已经解决了他们的兄弟姐妹之间的竞争，因为雪莉自从事件发生后就没有对斯坦表现出任何暴力行为，然而，在"政确校长的最终正义"她威胁要射杀斯坦，把兰迪和莎伦的漠视归咎于他，而支持他。
莎伦·马什
她是雪莉的母亲。在家里所有的成年人中，莎伦似乎与雪莉最亲近。然而，在“无法上网”，雪莉表现得对她的母亲很讨厌，她对她说不要上网去睡觉，她问她：“妈妈，你为什么这么恨我？！”
兰迪·马什
兰迪是雪莉的父亲。他经常见到与斯坦的互动，但他和雪莉已经谈过几次。
在"无处不在"中她对兰迪每天荒谬地录下家庭滑稽动作感到沮丧，说“爸爸，把它关掉!”
兰迪非常爱她，这在“百老汇歌剧”中表现出来，他开车去了音乐剧剧场，在那里，女人们会受到影响，会在她们参加之后给她们的伴侣口交，以防止她和拉里·费根之间的任何性关系。
尽管雪莉并不觉得不觉得他有这种感觉，在"政确校长的最终正义"中她声称他甚至没有尝试去了解她。兰迪回答说他真的很想，但他觉得她讨厌他。
马文·马什
马文是雪莉的祖父。她似乎很爱他，因为当她认为斯坦想杀他时，她甚至比平时更生气了。但在"政确校长的最终正义"中，兰迪说要她照顾马文时，她把枪对准了马文。
金博·克恩
他是雪莉的叔叔。他们之间没有太多的互动。
弗洛·金布尔
她是雪莉母亲的阿姨。弗洛姑妈给雪莉一个电视/CD播放机/环绕立体声家庭影院，雪莉感谢她，在她被她给斯坦的邪恶的金鱼杀死之前。
关系
斯盖勒·莫尔斯
在学校里没人喜欢雪莉，这使她对二十二岁的斯盖勒·莫尔斯产生好感，他正努力成为一名音乐人。斯凯勒确实喜欢雪莉，但只是为了想和她做爱而已。在"猫之恋曲"中，雪莉拒绝了斯凯勒想和她性交的请求，随即斯凯勒便与她分手了。这使得雪莉非常沮丧，并同卡特曼一起找斯凯勒复仇。
埃里克·卡特曼
斯凯勒和她分手后，她变得很沮丧。当斯凯勒和她分手时，她在照顾的孩子埃里克·卡特曼让她意识到她不需要他，而他是个混蛋。两人曾经是敌人，但在报复斯凯勒后不久就成了朋友。
然而，在后来的表现中，他们的相互理解似乎恶化了，谢莉对待他就像对待斯坦的其他朋友一样。她把他称为“肥大便”。
埃米尔
在第12季的“无法上网”中，雪莉在网上有了一个新男友。她相信她和埃米尔之间的感情是真实的。在这一集的结尾，他确实关心她，因为他也去了加利福尼亚，这样他和她就可以继续在网上聊天了。在那里，他们最终也会亲自见面，并承诺在当晚互发电子邮件。
考虑到她后来和拉里·费根的关系，我们可以假定这段关系已经结束。
拉里·费根
雪莉在“百老汇歌剧”中与拉里·费根成为朋友。他们开始花很多时间在一起，扮演卡坦的定居者，最后一起去看“坏女巫”然而，兰迪知道如果他们去看那出戏，然而，兰迪知道如果他们去看那出戏，雪莉最终会给拉里口交，于是他打断了他的表演。拉里·费根在混乱中被杀，雪莉伤心欲绝。她最近刚从死亡中走出来。
Trivia
- In the 1992 short Jesus vs. Frosty, the original Stan mentions having a sister living in Minnesota.
- Her name is alternatively spelled on the main site and in official scripts as both "Shelly" and "Shelley".
- As all of Stan Marsh's family members are named after members of Trey Parker's family, Shelly takes her name from his sister.
- In South Park: Bigger, Longer & Uncut, Shelly is able to close her mouth while talking.
Prominence
- "An Elephant Makes Love to a Pig" - Shelly's first appearance. She has to wear braces now and she beats Stan up because of it.
- "Death" - Shelly is horrified when unknowingly Stan holds a rope which is choking their grandfather, and in response, she hits him.
- "Chickenpox" - Shelly has chickenpox and is miffed that Stan's going to stay in the same hospital room as her when he gets it.
- "Cat Orgy" - Shelly babysits Cartman, and dates a young man named "Skyler" at the same time.
- "Mr. Hankey's Christmas Classics" - Shelly sings "I Saw Three Ships" on the piano and smashes Stan and Kyle as they tease her in the background.
- South Park: Bigger, Longer & Uncut
- "Are You There God? It's Me, Jesus"- mentioned
- "Quintuplets 2000" - Seen in the living room at her house and in the audience at the Cirque du Cheville show.
- "The Wacky Molestation Adventure" - Shelly gets arrested when Stan is dancing and she tries to punch him.
- "Fun with Veal" - She asks her mother if she can beat Stan.
- "The New Terrance and Phillip Movie Trailer" - Shelly needed tampons but when the boys forget to bring them, her blood ends up all over the whole first floor.
- "Red Sleigh Down" - Seen in the crowd, when Jimmy Valmer sings The Twelve Days of Christmas to the town.
- "Fat Butt and Pancake Head" - She appeared watching Kyle Broflovski's presentation.
- "Pre-School" - Insists however that Stan come clean about the lies that made Trent want to kill him in the first place
- "All About Mormons" - She didn't want to be a Mormon.
- "Trapped in the Closet" - She spots John Travolta arriving at Marsh Residence.
- "With Apologies to Jesse Jackson" - Seen watching her father play Wheel of Fortune with her mother.
- "Le Petit Tourette"- Seen at Whistlin' Willy's.
- "More Crap" - Shelly is sickened when she sees the size of her father's latest crap.
- "Over Logging" - Where she needed internet to contact her second boyfriend Amir.
- "Pandemic" - As with the rest of the family, she gets increasingly frustrated by her father videotaping everything that happens in the Marsh household.
- "Eat, Pray, Queef" - Talks about queefs at the dinner table, even joking about a "Great Barrier Queef".
- "Pee" - Seen at the Marsh Residence, when Sharon is talking to Randy over the phone.
- "201" - Seen in the crowd with her family.
- "It's a Jersey Thing" - She is seen having dinner with the Jersey's and seems to have a disgust.
- "Crème Fraiche" - She is seen having breakfast.
- "You're Getting Old" - She is seen at the end of the episode with the whole family.
- "Ass Burgers" - Seen watching television.
- "Broadway Bro Down" - She begins a short lived relationship with Larry Feegan.
- "Cash For Gold" - Seen visiting her Grandfather with the rest of her family.
- "A Nightmare on Face Time" - Seen working at and eventually burning down her father's Blockbuster.
- "Gluten Free Ebola" - Seen with Stan, watching her parents throw away all their food that contains gluten.
- "The Cissy" - Seen in her room listening and dancing to Lorde music.
- "The Magic Bush" - Seen at the ceremony.
- "Cock Magic" - Complains to Sharon about Randy hogging the bathroom.
- "#REHASH" - She goes to the "Women of Rock" concert, only to be deeply disappointed in Lorde. She tears down her Lorde posters in her room and cries.
- "HappyHolograms"- Randy tells her that he is Lorde.
- "Where My Country Gone?"- Seen watching the Canadians leave.
- "PC Principal Final Justice"- Pulls out a gun on her family at the dinner table, and is later seen among the crowd of people standing in front of the Whole Foods Market.
- "Member Berries"- Seen at the dinner table.
- "Oh, Jeez" - Seen eating dinner with Randy and Sharon, when Randy "infects" her with Memberberries.
- "The End of Serialization as We Know It" - Seen watching the news with her family.
- "Holiday Special" - Seen drawing in her room.
- "Hummels & Heroin" - Rallies with Marcus Preston after witnessing his presentation in the school cafeteria. This is her first appearance in the school. Later sits depressed at the dinner table at home.
South Park (video game)
Shelly is a playable character in multiplayer mode. However, She is only available on PC, in addition to Satan, Jesus, and Santa.
South Park Rally
Shelly appears in South Park Rally as unlockable character. To unlock her you must win Valentine's Day Race without being attacked by an arrow. But for Nintendo 64 version, You must find the three golden cows
South Park: The Stick of Truth
Shelly is seen as an enemy in her room. When you first go into her room without Stan as a buddy, she threatens the player and sends you out of her room without initiating a battle. When the player goes with Stan, she can be battled. After she is defeated, she befriends the player after his return to speak to her, stating that at least he doesn't fight like a girl. Kenny's Charm ability works on her despite her gender and summons can be used in her battle.
语录
当马什家发生争执时：“我恨这个家庭！”（I hate this family!）
| 马什家族 |
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