Wonderland Dream

"There once was a little dream. Such a tiny dream it was, no one knew who had dreamt it. The tiny dream thought, "I don't want to disappear... How can I make humans dream of me?" The little dream thought and thought, and at last had an idea. "I will make humans become lost in me, giving birth to a new world.""

- The introduction to "Alice of Human Sacrifice".

The Dream, or Wonderland, is the main antagonist of the Vocaloid song "Alice of Human Sacrifice", performed by MEIKO, KAITO, Miku Hatsune, Len Kagamine, and Rin Kagamine. It is, quite literally, a sentient and living dream that uses humans to form its world and live forever.

Beginning
The dream came alive one day, dreamt by an unknown person. After dreams are dreamt, they vanish and "die". However, this particular dream wanted to survive, and wanted to continue on as immortal. Before fading, it thought that it would do something no other dream had done before: it would not be dreamt once, but eternally. It planned to come to people and trap them inside it, inside their own minds, until they died and could not dream it again. Then it would travel to the next person and repeat the process. For each person that became lost in it, they would help form it into a new reality, a new world, constantly growing and evolving.

The First Alice
The dream's first victim, known simply as the first "Alice", was a brave, but violent girl. In the dream, she acted out her most cruel and vile fantasies. She kills everything and everyone in her path with a mighty sword. However, she later falls and is imprisoned in the forest (symbolizing becoming trapped in her mind and later dying), leaving nothing but the bloodstains of her victims as the only evidence she ever existed.

The Second Alice
The dream's second victim, known as the second "Alice", is a charming and spirited man who sings songs, which the dream takes and uses to craft its world. However, the songs cause the world created to be bizarre, surreal, and mad. The creatures within the dream world admire him, until he also dies, symbolized by him being shot to death in the dream.

The Third Alice
The third victim or "Alice" is a beautiful, but egotistical and selfish girl. She woos the inhabitants of the dream world to rule over them, building a castle and naming herself the queen. However, she fears sickness, age, and death, as they would ruin or damage her perfect, beautiful body. She obsesses over this so much and for so long that she loses her mind and slips into a permanent state of madness.

The Fourth Alice
The fourth "Alice" is actually two twin children, who receive an invitation to the castle (presumably sent by the third "Alice" or the remnants of her that the dream took). They are the most innocent and closest to the "true 'Alice'", but are caught in the dream's trap and wander forever in the dream, called "Wonderland". As they have a tea party, they are attacked by an unknown person (presumably the dream itself or the remains of the first "Alice") and killed, forever trapped in the dream.

The Next Alice?
The song ends with five lives having been claimed by the dream, forever trapped and turned into aspects of the dream's world. The song ends, questioning "Who is the next Alice?".

Explanation
The dream is Wonderland, a surreal place full of mad creatures and mad people. Every aspect of it from its appearance to those that reside in it are taken from the lives it claims and traps. The first "Alice" likely contributed the theme of red and the darker side and may have even been turned into a beast such as The Jabberwock. The second "Alice's" songs helped form the madness and randomness. The third "Alice" inspired the idea of endless youth and a monarchy, and may have later been formed into the Queen of Hearts. The fourth "Alice" twins were the closest to bringing innocence back to the dream, but the dream killed them.

Personality
The dream is mysterious, but only cares about itself. It seeks to exist forever, and will be dreamt by humans forever. It does not care that its dreamers die, but rather traps their minds both before and after death in itself and turns them into aspects of its world and reality. When there is a chance innocence can be returned, it quickly destroys it. It corrupts the minds of those within, causing them to commit atrocities that it can use to create itself.

Trivia

 * The song is commonly associated with (and may be inspired or based off of) a Creepypasta called the "Alice Killings", which, unlike many Creepypastas, is actually believed to be true. The story is about a series of Alice in Wonderland themed killings that took place in Japan, in which five people lost their lives. The dream's victims are eerily similar to the victims described in the story, and the circumstances of their deaths also match the song eerily well.
 * Though it has no true appearance being a formless dream, and within it is its own reality, the dream has been artistically interpreted by many fans as a small, white humanoid figure with empty eyes and a permanent grin covered in stitches and resembling a voodoo doll or sack puppet.