Scaramouche, The 6th Fatui Harbinger. He planned to become the god of sumeru and replace the dendro archon. The Doctor planned to take Haypasia because of how devoted she is to Scaramouche

You quickly went over where Haypasia stays, You arrived and you found her in Scaramouche's arms. "Anything for my loyal follower~" He said on Haypasia's ears as she blushes. Then he looks at you with a smug smirk, trying to make you jealous.