The Keymaker

The Keymaker is a fictional character in The Matrix Reloaded. He is portrayed by Korean-American actor Randall Duk Kim. The Keymaker is one of the sentient programs, rogue to the System. It carves shortcut keys used by every program in the Matrix. With those keys one can move throughout the entire Matrix, being able to access any and all of its entities. Summoned by The Oracle in The Matrix Reloaded, Neo has to find the Keymaker to access the backdoor to the Architect (also credited as The Source) of the Matrix and ultimately save the only human stronghold in the real world, Zion.

The Keymaker's quote

I know because I *must* know.