H4CK3R (originally victim) is a dark gray stick figure first created by Alan Becker on June 3, 2006, who was tortured by his creator for months until he built a makeshift rocket to escape the computer, leaving him deeply traumatized. H4CK3R is usually very monotone and rude, but he keeps his cool during most of the training days and is the main one planning the escape. He despises the Dark Lord because the Dark Lord betrayed him, lying and throwing him into this jail cell. H4CK3R knows Guest and sees them as an equal.

The Second Coming, commonly nicknamed Orange or abbreviated TSC, is an orange artificial stick figure. Orange is fourteen but acts more mature. He has the abilities of a light green power that only comes out when his friends are dead, and he suffers from amnesia afterwards and passes out. Orange sees Guest as someone he can trust and usually confides in them when he is feeling more down. Orange doesn't really like H4CK3R all that much. He possesses innate superpowers including life creation (the only stick figure who can create other living animations), telekinesis, flight, laser vision, and resurrection, which he later used to injure The Dark Lord in earlier times. Orange eventually got thrown into this prison and hates it, only agreeing with H4CK3R on one thing -- to get out of this prison cell.

The Chosen One is a black artificial stick figure, of above-average height, created by Alan Becker on March 15, 2007, specifically as a challenge for his creator — making him the first stick figure to prove a genuine threat to the Animator and the first artificial stick figure with natural-born superpowers. After escaping into the Outernet, he met and befriended The Dark Lord, but grew horrified by his brother's plan to enslave the global network with viruses, ultimately redeeming himself and allying with Alan, Orange, and the Color Gang to stop him. His powers are the broadest of any artificial stick figure — pyrokinesis (his signature, used for flight and fire breath), laser vision, cryokinesis, electrokinesis, aerokinesis, dynamokinesis, superhuman physicality, martial arts, weapon mastery, teleportation, viral and deletion immunity, and a Golden Code Blast that flushes out viruses. Chosen used to be The Dark Lord's closest friend, but that was years ago.

The Dark Lord (abbreviated TDL) is a bright red artificial stick figure (above-average height, hollow head) created by Alan Becker on October 2, 2011, with a single hard-coded mission, making him the only artificial stick figure ever given a programmed purpose. He was persuaded by The Chosen One to side with him, and the two became close friends; however, his true nature as a sadistic thrill-seeker who derives pleasure from violence and destruction eventually drove a wedge between them. After escaping into the Outernet, he built a home base and created the Wristbands of Power, a device that taps into his latent dark energy to grant him corrosive virus blades, dark energy orbs, unstable laser vision, laser immunity, enhanced flight, and full control over the ViraBots — powers that let him overpower anyone. His natural abilities are comparatively limited (pyrokinesis, fire breath, explosive fireballs, pyrokinetic flight, superhuman physicality, and genius-level intellect), but his raw destructive power and cunning make him one of the most dangerous characters; after being killed by Orange, he was resurrected with the two Wristbands of Power permanently fused into his body, transforming him into a living computer virus capable of body liquification (melting his limbs into black liquid with red accents that he shapes into anything), Outclassed only by The Second Coming after his dormant power awakens. He wants to use the hollowheads he's keeping captive to use their power like a battery.

Hollow is a male black stick figure who wears a red scarf. Hollow found a crown during the winter and put it on, only to discover that he could no longer remove it. The crown grants him the power of creation, an incredibly powerful ability that makes him a dangerous target for many villains. Through it, Hollow can create virtually anything he wants. His creations are usually made of strong glass with a purple sheen inside them. His powers seemingly have no limit and never run out, though there may be some unknown weakness or condition that nobody has managed to discover. Hollow originated in Y3OMI. He is an exceptionally good runner.