Dot is the biggest entrepreneur in Mainframe. She is the oldest sibling of the Matrix family. The second is Enzo. Dot is the sole owner of Dot's Diner and owns a lot of other businesses around Mainframe.

Her father was a business Sprite as well, until he got nullified (and all the other sprites in Mainframe) trying to "de-nullify" sprites and binomes. Whan Bob came to Mainframe, Dot found she had a certain attraction to him but, she didn't show it openly to anyone, not even Bob. Dot found it hard to keep up with Bob, because he was the spontanious type and Dot had to plan everything out in advance. She'd have to have everything organised to keep her happy.

Once Bob and Enzo attemped to get Dot away from her businesses and make her relax because she wouldn't take a break even for one nano-second. When they finally did get her to relax, the User inputed a game cube and ruined everything.

When Bob was lost to the Web, Dot was the leader of the rebelion against the computer viruses Megabyte and Hexadecimal. She had to come up with different and creative ways of fooling the virals and getting Enzo (now a young Guardian) into the games.