I like it too XD, it's emoji worthy.
Yeah, drawing them all just helps to get the swing of how emotions work and I have bounced around with different expressions to capture this; ranging from deadpan to happy. I have been told plenty of times that the expressions on characters that I have drawn are pretty good and captured well.
Crazy expressions just show that epitome of bare emotion there, more so than anger tbh and it gives off a lot of character.