- Gender: Male
- Age: Unknown
- Hair: None
- Eyes: Red
- Nationality: Unknown
- From the manga Biobooster Armor Guyver, by Yoshiki Takaya
- First Appearance: Chapter 13
The final member of the Hyper Zoanoid Team 5, Thancrus is a high speed close combat specialist. The blades on his arms are made from micropleated material that vibrates at an extremely high frequency, allowing him to cut through virtually any object. They can be parried with other high frequency weapons, however. So fast do the blades vibrate that Thancrus is actually forced to vent the heat through the fin upon his head and aperatures at his elbows in order to avoid overheating.
In terms of combat ability, Thancrus is the Hyper Zoanoid who correlates most directly to the typical martial artist’s abilities. He is fast, agile, and very skilled with the use of his weapons. Unfortunately, he is not quite as stupendously awesome as he likes to think he is, a factor which can get him in over his head. In addition, he is not the most physically resilient of Team 5, and fares poorly when caught by surprise.
In his human form, Thancrus is a thin, somewhat weedy-looking Asian man with straggly black hair. Unlike several of the other members of Team 5, he does not seem to have any particularly unusual features.