The professor was a good character, his overbearing personality could be a bit much at time. He did work well with Quinn and despite his personality really cared for them all. I was really disappointed with the way his character ended and really missed him from the show.
Killing Professor Arturo really was a dumb thing to do. Right then and there I knew that the show wasn't going to do well. Maggie rubbed me the wrong way. They were a kind of family. After the Professor's death they became more like a team. It just wasn't the same.