DR9's Underswap Take

Alright Pinheads, this is my version of The Alternate Universe UNDERSWAP.
It is an AU where characters swap positions, while keeping some of their original personality.
== About The AU ==
Same as it's original version, it is a switch-up AU where characters swap roles. The story is similar, but still different in many ways to the original Undertale. The Characters are almost entirely new due to the fact they take decent chunks from their role and their original version.
== Canon Changes ==
Sans and Papyrus Swap.
Toriel and Asgore Swap.
Frisk and Chara Swap.
Temmie and Flowey Swap.
Undyne and Alphys Swap.
Asriel and Monster Kid Swap.
River Person and W.D. Gaster Swap.
Mettaton and Nabstablook Swap.
Nice Cream Guy and Burgerpants Swap.
Froggit and Whimsum Swap.
Chilldrake and Snowdrake Swap.
Snowdrake's Dad and Snowdrake's Mom Swap.
Reaper Bird and Memoryhead Swap.
Greater Dog and Lesser Dog Swap.
The Gaster Followers are now instead "Sea People," who tell you about The River Person.
Goner Kid is mostly the same.
The Ruins Dummy and The Mad Dummy Swap. Instead when you get to waterfall, you encounter, "The Apathetic Dummy."
Grandpa Semi and Gerson Swap.
== Characters ==
=== Chara Dreemurr ===
The 8th Fallen Human. When The Story Picks up, They are in their late teens. Unlike Frisk, they decided to stay with Asgore for a long time. They leave eventually, however. Which is where the story starts. They fell underground when they were 11.
=== Temmie(s) ===
Temmie is a dark murderer, who wants CHARA's SOUL. Unless they are on Genocide, where as then Temmie will want to help them. They also have many other Temmies, which help them through their various schemes. They are also your assistants on Genocide routes. Instead, they will kill the shopkeepers, and offer you the items that they would normally sell.
=== Asgore ===
He long ago was The King of The Monsters. He refused to lose hope when they were forced underground, and kept the kingdom motivated and positive. When MK and Frisk died, he continued on. But Toriel thought he was a coward, and they should strike back against humanity. Asgore insisted that his point of view was truthful, and they had to be merciful. Toriel angrily refused, and banished him to Sundown City. He became The Ruler of it, and it, unlike most places, was peaceful towards humans. Hence why Chara only ever gets into fights here on The Genocide Route. 
(Other than Mad Dummy, Hapstablook, and a few monsters who you can ask to fight for training.)
Pacifist and Neutral - Father Knows Best
Genocide - The Last Thing He wanted + Wächter des Berges
=== Hapstablook ===
The Ghost Performer of Sundown City. He was given a magician's body by Asgore, giving him powers along with it. It is also entirely made of magic. However he is not entirely bonded to it, so he cannot die anyway, even on Genocide. On Pacifist, he just does shows. However once, he tries to rope you into "The Most Deadly Show of your life!" You can either defeat his current form, or stall until Asgore gets there. On Genocide, he challenges you to a battle. The only way to beat him is to get the temmies to attack him with magic, via waiting for them to get there. Then in his weakened state, you finish him off. 
Themes:
Neutral and Pacifist - Eccentric Showrunner
Genocide - Magician's Brawl
=== Papyrus ===
The Eccentric Scientist who sees Undyne as his mentor. He is also an Unoffical member of The Royal Guard. Similarly to Classic Papyrus, he has perfect control over his magic, and sells Spaghetti. But he himself likes to eat Dinosaur Egg Oatmeal. He fights you on Pacifist, but as more of a joke than anything. He wants to motivate Sans to join the royal guard, hence why he convinces him to try and capture you and have his more cheery outlook. He also believes that he is the greatest skeleton in The Underground, and he is rather respected. He also likes clever wordplay, but hates Cheesy or Bad Puns. Along with having a hatred of pranks. He Sometimes makes them just to make Sans happy, though. He also is a stand-up comedian at Nabstabbot's Resort. He has Deja Vu of resets, and can tell how many times you've died when you fight him. But he doesn't really care, either. He likes eating at Nabstabbot's Resort, but doesn't like eating at Muffet's. He also likes to say "NYEH HEH HEH!"
He speaks in all caps with The Papyrus font, same as Classic Papyrus.
Unlike Classic Sans, he is actually not Lazy at all, rather active.
Themes:
Pacifist and Neutral - THE MOST MAGNIFICENT BONETROUSLE!
Genocide - "I WOULD LAUGH, BUT NOTHING'S FUNNY." + Thanatophobia
=== Sans ===
The Lazy, Yet Ambitious Sentry. He wants to capture a human to make his brother happy, and so he can join the royal guard. He does stand-up comedy at Muffet's. He has access to blue and orange bones. He can also use Gaster blasters, but doesn't very much. He can use telekinesis, but he only slams you up and down. He can't remember the resets at all, but notices weird things that happen and traces them. He makes Hot Dogs, but doesn't eat them. He prefers to eat Ketchup and Fries. He doesn't have a laugh, but he sometimes says "eh eh eh." When he thinks something is funny. He speaks in Comic Sans, but uses Proper Capitalization. He lives with his brother in Freezeflame County. Their House is Extremely Large and full of things such as a pool table, deluxe kitchen, etc. The Outside is also rather durable due to the strange area. He enjoys Cheesy Puns and Pranks.
Themes:
Pacifist and Neutral - "eh eh eh." + The Quarrel that may occur if The Sansational Sans is here.
Genocide - Megalovania Strikes Back
=== W.D. Gaster ===
The Overly Happy and Excited Man who has a ferry which takes people throughout The Underground. He is apparently Sans and Papyrus's "Uncle," he fights you along with Grandpa Semi right when you enter Voidfall. He is very effective with Blue and Orange magic, Along with Gaster Blasters. He is also believed to have been the former royal scientist, until tragedy struck.
Themes: (Note, you Don't Fight him on Pacifist and Neutral, but he hates you if you kill Sans.),
Pacifist and Neutral - Wow this Ferry Must be Expensive.
Genocide - Beware The Man that Speaks in Hands + The Doctor's Theme
=== Grandpa Semi ===
The Grandfather of Sans and Papyrus, Along with being The Father of W.D. Gaster. He is very old and wise. He is also willing to accept selling. He is rather kind to you unless you've killed Sans, where as he will charge you x5 as much, and won't accept your items. Which can make Voidfall much harder.
Genocide - Beware The Man That Speaks in Hands + The Words of a Wise Man
=== Flowey ===
Flowey is rather nice, helping Chara throughout the underground. He appears several times to help you and sell you items. He also gives you tips, and will even do a few puzzles for you, at least on Pacifist or most Neutral Routes. If you do a darker Neutral Route or a Genocide Route, then he'll actively try and stop you. However, he is mostly kind, and even makes jokes throughout the game. He sends friendliness pellets which heal you during battle, and he can also explain attacks for you. Such as Blue attacks, Orange attacks, etc. He is mostly well-liked by the citizens of The Underground, Including Sans and Papyrus. He is hated by Temmie for unknown reasons.
Pacifist + Neutral - Flowey shop! =D!
Genocide - Bitter Enemy.
=== Alphys ===
The Somewhat Nervous Captain of The Royal Guard. She is however very powerful and famous in the underground. She tries to stop you with several lethal puzzles. She wields a mace. Instead of throwing spears, she points her mace, and spikes shoot out of it. She is rather timid, but if you spare her, she'll help you a few times in hotlands. She is willing to help most monsters, and in this timeline, was still the original creator of The Amalgamates. She is rather intelligent, contrasting to original Undyne. She is still determined to capture a human. Her puzzles get far more difficult if you kill more monsters. She is mentioned several times to be an "extremely brave captain." Along with being a "tactical mastermind." She struggles to keep up with all this praise.
Pacifist + Neutral - ...ngah? + Mace of Wrath
Genocide - Battle Against a Determined Warrior.