Unlike the normal, kind, Classic messy, he is being absolutely rude to everyone as well as commanding. He even has William do his dirty work for him, like reading a bedtime story. Messy is part of the guard, but, abusive towards Scar. He's worse than Scar, he's loud & obnoxious. Even yelling at William for being lazy.
This version of Messy is the Fell!Papyrus Type. He hates being treated kindly. Even Mizuki wants to self-destruct herself, Messy convinced her not to because he still has the heart to love her with & would be devastated to lose his mother, Father or brother.