Board Thread:Theories and Rumors/@comment-39780427-20200110002557/@comment-32147440-20200125155401

The sets should never be used to define the show. Pythor is an enemy of the Ninja in the Season 4 sets, and Hutchins also appeared to be fighting the Ninja (which led some to believe he was the Quiet One). Sometimes, plot important characters aren't featured in the sets (like Kataru or many Elemental Masters). Kai is flying Firstbourne in the Hunted sets. The sets, as I previously stated, aren't the best indicator for how things will go in the show.

For now, the shorts have alluded to the Rats Pack serving the Rat King. We haven't been explicitly told Richie and Hausner serve Unagami. Perhaps, the Rat Pack just play a vital role in the sets so Lego just picked two of them and put them in there to represent them playing a role. Until the show tells us, "Richie and Hausner don't follow the Rat King and instead follow Unagami" we can't say its confirmed just because they're in the sets. Not saying it can't happen, just saying we need official confirmation.