Takeo Shiroishi (城石丈雄?) is a scientist character created by Shiroishi TakeoToho who first appeared in episode 1 of the the 1996 tokusatsu series, Seven Star Fighting God Guyferd titled The Birth of Guyferd.
Takeo is the first major character seen in the show. Takeo was once the head of the Fallah virus research team. He sought to use the Fallah virus to cure all ails, but failed and created the first Mutian. After that, he burned his notes and vowed never to do Fallah research again, but he is approached by the owner of the Laboratory, Mr. Bicross, who forces Takeo to continue under the command of Megumi Shion. It is clear that Takeo disagreed, because he is seen next escaping a prison cell during a lab fire in the Crown building. When he escapes, he finds Gou Kazama, and helps him escape too, but not before discovering that The Fallah in Gou has reached a symbiosis, or Guyferd. Takeo aids Gou throughout the series.
- Takeo is shown to have a great liking for ice cream.