Eridan may be a dickwad most of the time but i still kinda feel bad for him. I mean like maybe he wouldnt be so bad if he had somebody. not that i would be the one. I have a hard time choosing between Gamzee and Sollux~
one bit that I actually really like as a little touch is making the trolls blood colour clear on their hands, elbows, knees and feet, where, I assume, it would on humans. it just adds this nice detail to it.
also, as for eridan being forever alone... the guy's not earned himself many friends and does hate all land dwellers, so... yeah.