I'll just go by Demi:
Bill Cipher: Simple, could use some more expressions, but pretty good. 7/10
Brombus: Absolute Cinema, 100/10 /j I say 4/10
Wubbox: Very expressive, good quality, and meme sprites. 11/10
Rare Wubbox: just a recolour and not very expressive, 7/10
Teal/Realman: Very basic, not much to say. 6/10
PVZ: Aside from the sunflower sprites I made, you freaking cooked. They could be cleaned up a little, but still absolutely amazing. 10/10
Epic Wubboxes: Not too expressive, but the different varieties of wubboxes makes up for it AND THEY LOOK SO CLEAN. 9/10
Watercooler: Buble. unsure if it's straight from the game or not, so buble/10
Understream foods: These actually look decent, and now I'm hungry. 8/10
Jackenstein: LONG/10
Souls: nice shading, but they're just the souls, so 7/10
Pluey: yes/10
Ramb: Don't know much about him, but the sprites look good. 8/10
Caption this Meme
