|This article is about a/an villain in Choujuu Sentai Liveman.|
- "Gash? Can you hear it? Those voices?"
- ―Great Professor Bias' final words before his death[src]
Great Professor Bias (大教授ビアス Daikyōju Biasu) is the main antagonist of Liveman. A super genius scientist whose appearance belies his actual age, Bias is well versed in all knowledge and worshiped as a god by his officers whom he educates by having them enact plans and learn from their failures. However, Bias uses them to achieve his life-long goal: the Giga Brain Wave.
Bias was originally a normal human who was born a few generations ago until he devised a means to cheat death by absorbing a mind-controlling thought pattern-based energy called "Giga Brain Wave". He had shown passions with "intelligent" human brains in order for him to maintain his immortality, but he was dependent on them. But as twelve minds with an IQ of 1,000 each is needed, Bias tricked eleven previous followers under him to be educated until achieving the ideal IQ. From there, Bias extracted the achievers' brains and placed them in the Brain Room to set up the Giga Brain Wave. Needing only one more brain to complete the Giga Brain Wave, Bias tricked Kenji Tsukigata and Rui Senda to join Volt along with Goh Omura, whose recruitment was out of pity.
Hiding his true agenda from his current followers, with only his bodyguard Guardnoid Gash as his accomplice, Bias took extremes from ordering the execution of Miku Kitamura, a girl from 2003, and later Gou when he unknowingly witnessed Bias' previous absorption of an incomplete Giga Brain Wave. When the effects begin to waver, Bias attempts to use his incomplete Giga Brain Wave to have Tetsuya Yano destroy the Gran Tortoise for him before it backfired and aged him before he managed to regain his youthful appearance.
Soon after, once Kemp reaches the IQ of 1,000, Bias uses Kemp's brain to complete the Giga Brain Wave and becomes a child as a result of absorbing the energy. However, Kemp's spirit rallies the ghosts of Bias' previous victims to take their revenge, causing Bias to revert to his true aged self. He dies in a wizened state aboard the exploding Brain Base with Gash, while hearing the voices of delusional praise.
Gaoranger vs. Super Sentai
Great Professor Bias is one of several past Super Sentai villains that appear in clips in the anniversary special Hyakujuu Sentai Gaoranger vs. Super Sentai.
- Bias is the only human member of Volt whose real name is never revealed.
- As an homage, appearing in the Kaizoku Sentai Gokaiger where the Gokaigers get the Livemen's Greater Power, Space Empire Zangyack's Zaien is voiced by Joji Nakata.