Cyberse

Cyberse (サイバース Saibāsu) is a Type of monster. This Type is used by Yusaku Fujiki in Yu-Gi-Oh! VRAINS. Appearance-wise, they resemble creatures and humanoids strongly connected to elements of digital technology and cyberspace, albeit at times they tend to resemble either Machine or Psychic-Type monsters (the humanoids bearing design elements from the TRON franchise). The name is a portmanteau of "Cyber" (サイバー Saibā) and "Universe" (ユニバース Yunibāsu).

In the anime
In Yu-Gi-Oh! VRAINS, the Cyberse monsters appear to be a special kind of monster related to the Cyberse world. When Yusaku used these monsters in his Duel against the Knights of Hanoi, the spectators were surprised to see him possess Cyberse monsters. As stated by Revolver, the Knights of Hanoi, through currently unknown means, had destroyed a vast amount of them to the point they believed Cyberse monsters to be extinct.

Trivia

 * This is the first new Type to be used by the protagonist of a spin-off series.