what i think the professor layton characters would look cool in for halloween costumes:

hershel: knight

luke: wizard apprentice

flora: witch

emmy: prince

desmond: vampire

randall: howl from howls moving castle

what they would probably dress up in-canon for halloween:

hershel: himself

luke: ‘the professor isn’t dressing up so i won’t either!’ *goes as gon from hxh*

flora: disappearing peace sign meme or the barbie girl from that one barbie movie where the princess barbie and the seamstress barbie sing together

emmy: glues a bunch of candy to herself

desmond: thinks he’s too cool for halloween but goes as whatever the phantom of the opera dude is

randall: goes as naruto and forces henry and angela to partner cosplay sasuke and sakura with him