The word "praetorian" refers to something or someone that is related to the elite guards of the Roman emperor. It can also be used to describe a person or group that is very loyal and protective, similar to these guards. Full definition
In early July, the Albany Times Union reported that Joe Bruno had recently made a number of trips to NYC, using state aircraft and accompanied by his usual praetorian guard of state police. (qtng.dreamhosters.com)
A screen shot of Praetorian Zedlee forever guarding the world of Grim Dawn, a member of the Black Legion, is the desktop background on John's computer. (kotaku.com)
That night, John showed his mother Praetorian Zedlee, who said it «was weird but very appropriate for him [Lee].» (kotaku.com)