Another not-so-ruthless claimant to the throne has arrived in King's Landing... Watch how two of HBO's heaviest hitters are joining efforts to save the realm.

The mashup video was posted on Sesame Street's Youtube page as part of a recently launched #RespectBringsUsTogether campaign.

In the video, childhood favourite Elmo from Sesame Street crashes a tense negotiation between Tyrion and Cersei Lannister - two characters who are not known for their pronounced familial love.

Meet Elmo - and watch how he tries to patch up things between them.

“Elmo thinks that you two need to respect each other. When Elmo has a problem with his friends, like Abby or Cookie Monster, Elmo doesn’t get upset, Elmo listens and learns from what they have to say,” he explains.

The magic seems to work its trick - and even Cersei hesitantly agrees to try Elmo's new philosophy of mutual respect.

On a side note, HBO also did not stop here: in another video, Cookie Monster joins Westworld protagonists Dolores and Bernard to debate "Respect World." See for yourself.