Sal. He made a very generic puppet into his own distinct character through his creativity and brilliant performance. I also like Seymour. I think he gets a bad rap. Okay, so he's like Beauregard lite, but I enjoy him.
In all honesty I love Johnny Fiama he's one of my fave 3 characters to come from MT but I would have loved if they didn't have Sal paired with him, like they did with pepe & Seymour, I think Sal works better on his own although I don't think Johnny Fiama would work well alone.