- Complete Monster: Kilobot, Dragon-in-Chief to Dr. K, the Arch-Enemy of Cubix, and the most vicious character in the series, Kilobot regularly drains innocent robots' life-energy throughout the series, plunging them into death-like comas in the process. When acting on orders from Dr. K, Kilobot goes out of his way to cause more destruction than remotely necessary, often times targeting children and innocents for fun. Kilobot regularly defies his master's orders, trying to let a weather machine destroy an entire city, stealing a cloning device from a robotics corporation, framing a hero for it, then trying to blow up said corporation when discovered, and murdering Dr. K's best friend, all on his own accord. Betraying Dr. K, Kilobot executes Maximix, takes control of an army of Zombots, then plans to use them to turn every robot into his slave then conquer the world, and, when his plans are thwarted, Kilobot makes one last attempt on Cubix's life by crushing his power core in his bare hands. Though appearing in a lighthearted series, Kilobot was a depraved monster whose appearances darkened the series considerably.
- Ensemble Dark Horse: Abby's robot pet, Don-Don and the malfunctioning Attractix robot, dubbed Kan-it By Dr K because it wouldn't stop singing. Helps that he was voiced by the late crocodile hunter Steve Irwin in the English dub. As for the human characters, Conner's father, Grant, mainly for the ship-Teasing he gets with Helen and the fact that he's voiced by Dan Green. Also Helen Herself gets this treatment for being a Cool Big Sis to the Botties.
- So Okay, It's Average: As the years went, it developed said reputation. Not terrible, but not especially memorable.
- The Problem with Licensed Games: Cubix: Race'n Robots for the PlayStation and PC features awkward controls, terrible hit detection, the difficulty waffles between unbelievably fast AI opponents and incredibly slow opponents (especially when you get the Zero-g engine 2000), and Story Mode can be beaten within an hour, even on hard.
- No Problem with Licensed Games: On the Other Hand the RPG Cubix: Robots for Everyone: Showdown has been Well Received and is widely considered to be the Better of the two Games.
- Uncanny Valley: Averted by making the robots look like toys, but used with the Robix spokeswoman with the purple hair. Even before The Reveal, there's just something slightly off about her.
YMMV / Cubix: Robots for Everyone