Demo Roseclair is the main character of the ASMT series and mascot of the talkhaus community.


Demo and her sister Iris were the last of the ABCDs created by the Artist, made using packing peanuts, a slab of meat, a lead weight, asbestos and a kangaroo.

The sisters eventually escaped the Artist's brainwashing powers and were captured by one of the Space Masters of Space, whom they have been working for ever since.


Demo's pretty straightforward; goal-oriented, determined, a big-picture type. She doesn't care for needless fluff or complexity, and when she's on a mission she often disregards or outright ignores anything she considers irrelevant to her objective. Demo doesn't speak much, but when she does she's brutally honest; as such she can often be insensitive, but not out of malice or contempt like Iris.


As an ABCD, Demo can gain new abilities from eating certain types of vegetables and is able to store large quantities of coins in her body.

It has also been established that she will eventually develop the ability to clone herself as her specialization.



Demo cares deeply about her sister, even if the two don't always see eye-to-eye.


Her beloved canine companion. She doesn't remember when she got him, but she doesn't really care.

Space Master

Intensely loyal, Demo will follow her master's orders without question.

Uncle Broadsword

Demo's favorite Uncle. She sometimes accompanies him on treasure hunts or helps him out with his wacky get-rich-quick schemes.


Being the main character of the ASMT series, Demo has starred as a playable character in every main game in the series. Her first appearance, however, was in raocow's Super Mario World hack What the Hell.



  • "Oh dear.  This certainly isn't a grocery store.  What to do?"
  • "...You're just another charlie guy?"
  • "*Sigh* My vegetables are beginning to rot..."

A2XT Episode 1

  • "Wait, hold on.  I know what's going on here.  This is an exposition thing, isn't it?  Where you drone on and on about the plot and the backstory and all that stuff.  Nobody wants to hear about that junk, Kood."


  • Demo was created by raocow with the aim of making an original protagonist for A Super Mario Thing in the vein of the VIP series' Boon. [1]
  • Demo's surname, Roseclair, originates from a level raocow made for A2XT Episode 1 that featured Demo as a Western film star for a joke. It was popular enough that he made it official and gave the explanation of it being derived from the vat Demo was made in. [2]




Characters in the ASMT series
Demo Krew Demo · Iris · Kood · Raocow · Sheath · Pal
Siblings Science · Garish · Mishi · Nevada · Pily · Pandamona · Calleoca
Uncles Broadsword · @sbestos · Denmark · Rewind · Pumpernickle
Elders Grandfather Wind · Grandma Generator · Papi Earthquake · Nana Doormaze
Second Cousins Respect · Washington · Delicious · Noise
Deities Blood God · Flesh Lord
Major Antagonists The Artist · Black Plague · King Charles · Key Boss · Parrot Boom Boom ·
Other Characters Con · Guy · Feed · Demo's Master

Groups in the ASMT series
Associations and Organizations Charlie Army · Resistance · Demo Krew · Siblings · Garish's Army · Uncles · Leek Orthodoxy · Spring Onionism · Elders · Second Cousins · Space Masters of Space
Races Space Demon (ABCD, Other) · Human · Furba · Goopa · Archwing · Chronoton · Yoshi · Charlie
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