For the antagonist of the 2013 reboot, See Mathias.
Mathias Vasiley was a art dealer who got his hands on the Obscura Engravings. He sent four to Werner Von Croy, but kept the last one. He was killed by Pieter Van Eckhardt.
- Vasilej is a Russian name, not Czech. However, since mafia in Czechia usually consists of Russian mobsters, not Czech, it's likely Mathias is either Russian of has Russian descent.