Hot take, but people write Sinestro too human when it comes to smut. Branch out a little!!!! Give him an ovipositor, or erogenous zones in places that are normal for humans to touch casually (like nape of the neck, or the hip, or wrist). Give him pheromones that humans can smell, but Korugan's can't (AND VISE VERSAAA). GIVE HIM EGGS. EGGS TO LAY IN HAL (and maybe carol, no scratch that. Carol can lay eggs in Hal. Give Hal all of the eggs NEOW). Branch out!!! These are aliens!!!!!! Make them different!!! Make it so they can only fuck when partially submerged!!!!

















