Enter BigO City.

The city cast

• Buffer, the steady guardian — Strings · String Lightworks. The steady one who links every symbol in sequence—carefully, patiently, and never out of order.
• Bitty, the digital botanist — Trees · Binary Tree Gardens. A bit-manipulation bot who tends a world of zeroes and ones, flipping each switch until the hidden pattern blooms.
• Dex, the visualizer — Graphs · Graph Observatory. A clumsy young code wizard with a huge brain, a bright heart, and a gift for making invisible connections visible.
• LEO, the meticulous cataloger — Hashing · Hash Archive. A quiet eight-year-old inventor-detective who notices every clue and always knows the right place to store it.
• GIGABYTE, the mountain explorer — Binary · Binary Ridge. A gigantic code-eating lizard who devours bugs, glitches, and whole broken programs—hungry, never evil.
• BRUNO, the structural unifier — Sets · Set Foundry. Bruno Uno is the city’s strongest leader, bringing separate groups together and making them one.
• NESS, the digital engineer — Linked lists · Linked District. A sharp, analytical detective who follows every connection, spots the broken link, and rebuilds the path.
• LINK, the explorer — Arrays · Array Avenue. The explorer who walks Array Avenue end to end—counting doors, holding his place, and never stepping past the last address.
• H, the coordinator — Matrices · Coordinate Square. A big-hearted father and fearless detective—strong, protective, and calm when every direction matters.
• QUEST, the enthusiastic organizer — Queues · Queue Station. A brilliant, accident-prone algorithm archaeologist who loves history, orderly expeditions, and moving fast.
• TYA, the vertical designer — Stacks · Stack Tower. A brave seven-year-old detective who stacks clues, solves puzzles, and is always first to help a neighbor.