Green Spider was first introduced in CTW's newest episode released just after april fools day. Blue planet also let him join the game. Watch episode 18 here: https://www.youtube.com/watch?v=9bGVGaZ5Ppc
If you use him as a sprite then give credit back to me. note: I could not find a .png image because episode 18 was released not too long ago and they may have not had very many images of him.
