The personalities explained in Simple Sentences: 37: A simple wallcorner I made. 7 is also a wallcorner so for the ones I just made a smaller wallcorner in the corner of the arrangement. I also imagine them to be a silly, so I made her look like one. You're welcome. 38: Made him look like the rook in chess. I would've copy-pasted 19's face onto him but I didn't want to make it look lazy, so I removed the eyebrows, made the pupils bigger, and recolored the black and white parts. 39: Since he's triple 13, I wanted to make the 13s look clear. It's represented by the 3s being different shades of gray and each group of 10 only touching one of those shades. I could've done it some other way instead of a 6 x 6.5 rectangle but that was my first thought. His face is also an edited version of 13's, and he's mad since he can't entertain the other NBs.