Vicious was a friend in the past but Julia split them up and made them become enemies because they loved her both.Since she escaped Spike searches for er and Vicious searches for Spike,for his old friend and enemy.
Vicious : Are you begging for your life?
Spike :Hardly, begging doesn't work on you remember? Even if it is coming from a man that took you in and made you what you are
2)Session 26:Spike Spiegel
Spike:I felt like I was watching a dream I'd never wake up from. Before I knew it the dream was all over.
"I dunno, but he seems like a total Spike Spiegel."