GigaBio MR4

A cave-dwelling breed of Golem that has a purple, limestone body with stalactite-like fangs on its shoulders and torso. Its body is often slimy and damp from the moisture that it absorbs from being underground so much.

Etymology Edit

Its name is a combination of the prefix giga-, a unit of measurement which denotes its large size, and bio-, another prefix referencing its biological nature.


Game Name Description Image
Monster Rancher 4 Giga Bio "The outstanding features of the GigaBio are its purple body and large fangs. Kids often start crying when they see it, but it really only wants to play."
Monster Rancher EVO GigaBio "A giant monster with large fangs and a purple body. It likes to play with kids, but often leaves them in tears because of its looks." GigaBio MREvo


  • To obtain a Giga Bio in Monster Rancher 4, use
  • To obtain a GigaBio in Monster Rancher EVO, use


For more pictures and screenshots of GigaBio, click here.

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