The Sykonetyks (not to be confused with the Archetype of the same name) are a mysterious gang in Sigma City that appears in Yu-Gi-Oh! GSTART. It is unknown what they are after. They appear to have an unknown leader. They go by codenames instead of their real names. They initially did not appear to be engaged in camaraderie and unity, as Geo remorselessly attacked Hydro and Aero, and Hiroki Kazoen left the gang without being targeted for retribution, but this turned out to be a lie: All of them, including Hiroki (truly Pyro), had been working together the whole time, and once the truth was out, they openly acted as though they were friends.
The current goal of the Sykonetyks is to stop Kohaku Yudin's rise as the 15th Alphomega, which requires not only the destruction of the Silver Game Card, but also Kohaku's powers to be destroyed, which will kill him. The reason for this has yet to be revealed, but the Sykonetyks do not appear to be willing to explain, believing it's better that he doesn't know.