Is there any good vast error references for sprite art of the secondary cast?

hihihi everybody im 5 seconds old and i dont know how drawing homestuck style sprite art works im trying to make my own mspfa for a vast error au (whether i finish and start posting it or not is up to the sillyness and whims of my mind.... lmao) and im wondering is there any good references or websites im missing out on especially anything for the secondary cast like racren turnin hamifi sestro ik theres a racren sprite and a hamifi and sestro one somewhere in the comic but like is there transparents of these already orr? i dont mind having to things the hard way or doing it on my own im just curious!!