|Ingame name: Optarium|
|First joined: February 15th, 2019
|Clans: The Fellowship (Former)|
|Bases: Semper Idem|
Opatrium was a player who joined SimPvP on February 15th, 2019. He went on to found The Fellowship with TheOnlySlash later that month. Although he would soon become inactive on the server, he is nevertheless regarded as a founding Fellowship member, even helping establish the team's first main city, Semper Idem.