Guardian 452 (Bob) - Bob is the Hero of our story. He's a Guardian from the Supercomputer, and has come to Mainframe to help the system. He makes many friends in Mainframe, and even falls in love with one, Dot Matrix, but the relationship is in a tender and awkward stage now. Bob is a rather fast-paced Guardian. He tnds to act without thinking, and makes things up as he goes along (rarely has a plan). He's good-hearted, and genuinely wants what's best for his friends and the good of all life.Bob is also the only Guardian to have meged with his keytool Glitch (a character all of his own whose job is to help Bob in all situations), and Bob plans to find out all he can about Users one day.

Dot Matrix - Young buisness-woman, and entreprenuer, Dot has her hand in almost all of the buisness in Mainframe, especially her pride and joy, Dot's Diner (the local and popular hangout in Mainframe). Dot is very intellegent, and sophisticated. She always has a plan, and a backup for every plan. She has good intentions, but has a tendancy to act pre-programmed and controlling at times. Dot also has feelings for Bob, but isn't sure what to do about them, since her heart doesn't seem to follow the logic of her mind.

Enzo Matrix - Dot's younger and hyper brother, Enzo talks fast and is always involved in one scheme or adventure (some might say he hangs out with Bob too much). Since the destruction of the Twin City, there have not been many friends for Enzo, so his closest would be his dog, Frisket. Enzo is also a copy of the youger Matrix, which happened when the system Re-booted.

Matrix - When Matrix was young, and Bob was sent into the web, he, being the only Guardian left, tried to protect Mainframe from enemies and games. After losing in a game (not only the game, but his right eye!), Enzo travels through the games in search of his home in Mainframe. Along the way, Matrix becomes a tougher character, guided mostly by his gun. He eventually finds Bob in the Web and brings his back to Mainframe where they defeat the enemy and save the system.

Wellmen Matrix - The father of Dot and Enzo (Matrix). He was a brilliant scientist who tried to prove the existence of other systems, but an experimental accident caused the Twin City to explode. Wellmen now lives on in a null form (Megabyte's pet null, Nibbles), and through the power of Hexadecimal, and a special suit, he can communicate with others, and try to find a cure for nulls.

Phong - The wisest of all the binomes and sprites in Mainframe (although his tidbits of wisdom sound much like forune cookies). He enjoys the game Pong, and if you beat him at it, then you've proven yourself worthy of his help and advice (Bob always beats him at the game). Phong was once the Command.Com but always denied this fact, and turned the job over to Dot.

AndrAIa - Originally a game sprite, she befriends Enzo and copies herself onto his icon to go outside the game. AndrAIa travels with Matrix in through the games, and the two becomes closer than "just" friends. AndrAIa is very smart, and loves Enzo (Matrix, or "Sparky") very much and would do anything for him.

Mouse - One of the best hackers in the all the web and net, she chooses to help out the Mainframers in their time of need. Mouse is a woman of action, and has some sort of past with Bob.

Turbo - The Prime Guardian. One can never be sure if he's working with or for Bob.

Mike the TV - The ultimate in LIVE TV. Mike doesn't just show what's on, he tells you. A big fan of Bob's (or should we say a close personal friend?), he's usually seen following Bob around or reporting Live on some event. The only problem is you can't turn him off, because his remote ran away.

Cecil - Cecil works in the Diner for Dot. He's sometimes referred to as the foreign comic relief.

Captain Capacitator and the Crew of the Saucy Mare -

Ray Tracer (Surfr) -

Megabyte -

Hack and Slash -

Hexadecimal -

Scuzzy -

Daemon -