Im quite impressed from these character designs; The fold overs and curves on the clothing are logical and adds that extra bit of detail to the characters. The designs on the tails of Bendy's brothers and sisters add a unique creativity to the comical style.
The light reflections, shading, and blemishes are very well made, and really makes the character pop out instead of being in the background. Each character is only seen once and provides a new aspect of your art, instead of drawing the same character 10 different ways.
The body movements and positions create the comical vibe and adding the the exhale, blood veins, sweat, and lines of body movement impressively merges comical and anime's articulate values.
Each character shows a different expression from the others, providing a taste of variety to any new watchers.
All round this is a well made piece, and I'm very impressed at the time it took for you to make this. The only thing I'd say for you to work on is just to add a slight bit of detail in the background, maybe a little bit of color blemishes, just something simple to keep it from looking plain.