I consider them a character, then so was the trailer. Maybe the royals did have four keys. Sean was after Mari for the key. What if Mari stole Sean's family key. That is why they wanted it back. Sean had and has no idea that Rolek was a Grimm with a key.So his family was after one Grimm not all Grimms with keys. Maybe that is what Sean did not want Mari to tell Nick. Here is Sean's family key. If Nebojsa stool his keys from Royals. Don't you think that would make him famous, hunted by the Royals. Seeing how he was a famous book collector and not hidding. I would imagine his keys where like the books, passed down from other Grimm's. That leaves Rolek's key. Because his key was stolen, could be why he was not an active Grimm. He was hiding. Rolek is a Grimm he has to know our have seen people that are wesen. Unless he was hidding and did not want it known he was a Grimm. Why would he not get a wesen to do a Monroee for Josh.
Do I really think the writers thought the trail of keys threw that far? Not for a minute. It is simply knowing the desired outcome taking the facts and creating a narrative. I am sure there are other combinations. So how about it. Oh course Occam's Razor says Sean lied. The only mention of the royals having four keys was Sean. If it was to show importance to Nick, then why not say the Royals have three making Nicks a swing vote. This way Sean is saying the royals already have a majority of the keys. Making Nick key less important.
Do I really think the writers thought the trail of keys threw that far? Not for a minute. It is simply knowing the desired outcome taking the facts and creating a narrative. I am sure there are other combinations. So how about it. Oh course Occam's Razor says Sean lied. The only mention of the royals having four keys was Sean. If it was to show importance to Nick, then why not say the Royals have three making Nicks a swing vote. This way Sean is saying the royals already have a majority of the keys. Making Nick key less important.
Embrace your inner Biest..... We all have one