SOLtiS

SOLtiS are a product produced by SOL Technologies in the Yu-Gi-Oh! VRAINS anime. They are humanoid androids with a built-in AI, intended for use around the house for cooking or cleaning, or at work for multipurpose jobs. They are capable of shifting their physical appearance to appear almost indistinguishable from actual humans, with the exception of glowing orange panels across their bodies and a blue diamond on their necks.

Summary

After the permanent shut-down of LINK VRAINS due to the combined attacks of the Knights of Hanoi and the Ignis, SOL Technologies developed the SOLtiS to keep the company afloat. The product proved to be immensely popular, bringing in a large number of orders and sponsorships in a short period of time after release, but the company faced criticism from thousands of ordinary workers for putting them out of a job.

Upon his return after the battle with Bohman, Ai, along with his cleaner-turned-partner-in-crime Roboppi, proved capable of taking control of the SOLtiS, allowing them to interact with the physical world and begin Ai's master plan. They first infiltrated a SOL Technologies cruise liner, crewed almost entirely by SOLtiS as advertisement for their product, to ambush Queen, defeating her in a Duel in an attempt to take full control over SOL Technologies. However, she only possessed one part of a master key to SOL Technologies' mainframe, with the other half possessed by Chief Executive Akira Zaizen.

Knowing that he would be targeted next, Zaizen gathered LINK VRAINS' best Duelists, including the Knights of Hanoi, inside the remnants of LINK VRAINS to stop the rogue Ignis. Ai and Roboppi eventually pushed through all the defenders to reach Zaizen, but were stopped short when he couldn't be found. Zaizen had planned for this, and boarded a plane headed for a distant destination on a separate, closed network to evade Ai's pursuit. However, Ai had planned for this as well, and having seen that a SOL Technologies plane would be taking off at so suspicious of a time, had a SOLtiS pursue the plane in a fighter jet, allowing him access to Zaizen's closed network. However, the plane was guarded by Pandor, an anti-Ignis AI developed by the Knights of Hanoi piloting a SOLtiS. But despite her best efforts, Ai proved victorious over Pandor and reached Zaizen.< He successfully defeated Zaizen and his sister in a Duel and claimed the second key, giving him control over SOL Technologies.

When Ai took control of SOL Technologies, he fired all the human employees and ran the company with SOLtiS, though he provided generous severance packages to the employees. Ai eventually revealed his master plan to his former Dueling partner Playmaker at a factory that produced SOLtiS. He would break down his own code and spread it among thousands of mass-produced SOLtiS in his own image, giving them all free will - the freedom to do anything they wished in the real world. It would be their choice to decide if they would live in peace with humanity or wage war with them. This plan was foiled upon his defeat by Playmaker, destroying him in the process, though this too had been part of Ai's plan, as he desired to die to prevent Yusaku sacrificing himself to save him in the future. With Ai's threat ended, Zaizen eventually became CEO of SOL Technologies, continuing production of the SOLtiS, alongside re-opening LINK VRAINS. The remaining Pandor would continue to inhabit a SOLtiS to interact with the Knights of Hanoi in the real world.