I love the really quite massive height difference between Rythian and lalna in your designs for them. The tall, thin figure fits Rythian's grim, brooding, tortured personality, almost making him seem vampiric, and Lalna's general squal stubbiness fits his happy-go-lucky but still rather monstrously evil persona. I could just see Rythian standing at a window with a wineglass as it's raining, while elsewhere Lalna is waddling around his lab, whistling a tune and plotting some sort of atomic Armageddon.
Also, Zoey and Rythian hiding under the cape-tent is just so adorable! It makes me want to squee! I love how Zoey is able to bring out the joyful and childish side of Rythian (sometimes).