The last round ended in a tie, so whoever gets the most votes here, will be eliminated for round 2, and the other will get the elimination for round 3.

I find Callaghan to be a more important character, and he is a pretty sympathetic character.

Robert lost his daughter and he felt that was some's fault. That's a lot of grief and it can drive you crazy. I feel there's more to sympathize with Robert. His story is sad. It's understandable why he did what he did and a shame that someone ended up dying because of it. He didn't know what he was doing or was really in his right mind. I just feel like his actions though horrible are understandable. So I like him just better than Alistar.

^Another reason I like Callaghan is he is similar to the hero. Both are vengeful and let their anger and sadness control their judgement. The only difference is Hiro used his bad choices to make good choices, and Callaghan still made bad choices.