Regardless of whether he is Dick Grayson, Jason Todd, or any of the other incarnations.

Fan artists have certainly noticed, and produced any number of X-rated pictures of Robin in chains.
[All pictures are the property of their respective artists, and depict adults.]
But why stop with Robin? Why not depict Spiderman, Peter Parker, being tormented by the Green Goblin on a dildo bench, with a vibrator attached to his penis?
Superman is invulnerable to most ropes, but insert a kryptonite dildo or two, and you'll have him right where you want him. In this case, on a milking machine.
Did you know that Kryptonians have no pubic hair?
More after the break