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Kingdom Hearts: Chain of Memories - Sora's Story
Victims of memory theft don't even remember what it is they forgot.
Kingdom Hearts: Chain of Memories - Reverse/Rebirth
The sneaky Trickmaster was a Heartless that Sora and his friends encountered in Wonderland while searching for the missing Alice. Throughout most of the adventure in Wonderland, Trickmaster is referred to as the shadows or as the darkness (especially by the Cheshire Cat).
It led the Heartless invasion of the kingdom and attempted to steal the Queen's heart, but failed somehow and went into hiding in the Bizarre Room. The Queen then blamed Alice for it, imprisoning her. In trying to prove her innocence, Sora had to combat her army of Card Soldiers.
The Chesire Cat hints to Sora that he might be able to drive out the true culprit by lighting two lamps in a different section of the Bizarre Room. Sora does so, and upon returning to the part of the room where he had shrunk, the Trickmaster drops down from the ceiling and engages Sora in combat. While Sora and his friends did manage to defeat it, Alice mysteriously disappeared, with no trace of where she had gone. Sora was disheartened by this.
Trickmaster briefly appears as a figment of Sora's memory. It stole the Queen's memory, and she accused Alice of the crime. When Sora, Donald. Goofy, and Alice ran into the Queen and her guards in the Bizarre Room, the Trickmaster appeared and attacked them all. Sora was able to defeat it and restore the Queen's memory, and Alice tricked the Queen into thinking she had sent them to look for it in the first place.
The Trickmaster also appears to Riku, as a figment of his memory and a representation of the darkness within him.
Kingdom Hearts coded
It is the source of the Bug Blox corruption and is the one who stole everyone's memories in Wonderland. The Trickmaster leads Sora on a wild goose chase throughout a glitchy Wonderland, turning the screen upside down and sideways before finally facing Sora three times.
A Trickmaster is a bizarre Heartless with spindly legs resembling scissor jacks, arms that appear and sound like they're made of paper, and a head that is made of several segments balanced of top of each other. Each of these segments sports its own face—though all of the faces have the same glowing yellow eyes and jagged mouths—and they alternate in color from red to black.
Its arms are black and it often juggles clubs with zig-zagging, purple and lavender stripes on them. It wears black armor with large, red shoulder pads, a black codpiece, and has a very thin and small red body. The upper halves of its legs are red, while their lower halves are black. Its feet are black, flat, and curl at the tips. Much of its upper body and head sport gold highlights.
In Kingdom Hearts Final Mix, the red sections of the Trickmaster's body become lavender, the black sections become red-violet, save for its arms, which become a dark shade of steel blue. Its clubs become striped with black and white, and its feet and the gold tinges on its body and head both become yellow with a slight green tint.
It looks similar to the Crimson Prankster.
The Trickmaster's name references the Heartless's ability to skilfully juggle its clubs in its hands while attacking and it's ability with illusion.