I love the look on his face. The best way I can describe it is that it looks desperate as all get out, but still has an "I'll hurt/kill you if you don't" look on his face.
Also, if trolls were to turn out to be real and came to Earth and there was an Eridan among them, I'd try and date him. Even if he is pathetic... It's kinda part of is charm to me. Also, I'd love to refer to him as Hipster Potter.