A is for the Architect, the bearded, polysyllabic creator of the Matrix, who popped up at the end of ''Matrix Reloaded'' to perplex Neo with such gobbledygook as: ''You are the eventuality of an anomaly.'' He returns in ''The Matrix Revolutions,'' which offers more information about his mysterious relationship with the Oracle. Thankfully, the words ''ergo'' and ''concordantly'' never pass his lips.
B is for Bane (Ian Bliss), the Zion resident whose body Agent Smith appropriates in ''Reloaded,'' giving the malevolent program a foothold in the real world. Bane launches a vicious assault on Neo and friends in ''Revolutions''; along the way, he unleashes such a remarkable impersonation of Smith's ''Hello, Mr. Anderson'' mannerisms that some may assume that he's actually Smith portrayer Hugo Weaving in disguise.
C is for Carrie-Anne Moss, a.k.a. Trinity, who gets one more chance to show off her trademark freeze-in-midair kick on a bad guy in ''Revolutions.'' Her relationship with Neo also deepens, offering some genuinely poignant moments amid all the robots and kung fu.
D is for the aptly named Deus Ex Machina, the disembodied leader of the human's machine enemies. Neo travels to the Machine City to try to negotiate a war-ending truce with the leader, which forms its own giant baby face by assembling hundreds of flying ''squiddies'' in midair. The leader's megabass voice, by the way, makes Darth Vader sound like Michael Jackson.
E is for Enter the Matrix, the films' videogame companion. Those who played the film clip-packed game -- which stars Niobe (Jada Pinkett Smith) and Ghost (Anthony Wong) -- will likely understand ''Revolutions'' better than non-gamers. But they also may become disoriented when the big-screen Niobe doesn't jump and kick at their command.
F is for Laurence Fishburne, whose performance as Morpheus may never seem the same to those who've seen Eddie Griffin's ''Scary Movie 3'' parody of the character (i.e., ''I am prophesizing!''). In ''Revolutions,'' Morpheus confronts the Oracle about his crisis of faith -- but her answers are typically cryptic.
G is for Geof Darrow, the veteran comic book artist hired by directors Larry and Andy Wachowski to draw conceptual designs for all three ''Matrix'' movies. Along with visual effects supervisor John Gaeta, Darrow makes a cameo appearance as a Zion soldier during one of the film's biggest battle scenes.
H is for Club Hell, a lovingly filmed S&M fetish club that serves as the backdrop for Trinity and Morpheus' final inside-the-Matrix battle. But despite their penchant for shiny leather, the visit is all business and no pleasure. Or so they claim.
I is for ice, in which a sore-muscled Keanu Reeves literally bathed during breaks in the grueling action sequences. Whoa. Or rather: Brrr.
J is for Jada Pinkett Smith, whose Niobe emerges as a major figure in ''Revolutions.'' She's this saga's Han Solo, saving the day with her impossible piloting skills. Alas, Harrison Ford never looked so good in alligator-skin tights.
K is for the Kid (Clayton Watson), the teen sidekick last seen bugging Neo in ''Reloaded.'' In ''Revolutions,'' the Kid (whose origin can be seen in an episode of the ''Matrix'' supplement ''The Animatrix'') has a heroic, gun-slinging moment in the final battle against the machines. He's still irritating, though.
L is for Harold Perrineau Jr.'s Link, whose relationship with Nona Gaye's Zee got a lot of screen time in ''Reloaded.'' Wondering why? Let's just say the Wachowskis wanted at least one couple to have a happy ending.
M is for the Merovingian, ''Reloaded'''s delightful Francophone villain, who unloads more snobbery and derision on our heroes in ''Revolutions.'' Unfortunately for Neo, though, the Merovingian holds the key to releasing him from the coma he fell into at the end of ''Reloaded.''