Knives??
I can understand why people would find Knives out of character. It has been over 4 years,and yes, Knives seems so stubborn. Well, let me explain what he has been up to. After Vash defeated him, he had to heal, which took a while even for a plant. He has been rather rebellious of Vash's beleifs, and as time went on he began to attack Vash more verbally. He takes delight in humiliating him and upsetting him. Most of his negativity is targeted at his brother, but he also has developed the entertainment in confusing anyone he can. It's a roughly layed-back sarcastic style he has grasped. He still despises Vash, but yet... hasn't left him...
The personality of him in this first chapter is one I had wished to show more of, but as the plot goes on and more conflicts occur, I find the reader wont see much of it. If I could have fit it in, I wouldn't have explained his change.
Trigun: Infinity