TedStixon

Answer: Quite simply, different crews and effects teams worked on different movies, and they wanted to put their own stamp on the character and do their own interpretations. They also understandably wanted to make him look more and more monstrous and scary with each film to try to "outdo" the last one.

TedStixon

Answer: In the original draft of the script, it was heavily implied that Paul was killed by Jason and Ginny was the only survivor. And in fact, an alternate ending was filmed showing he died. However, any direct references to him having died were removed from the final film during editing (in part because the special effects were deemed "too silly"), and his fate was instead left ambiguous. There is also some SLIGHT evidence he may have survived, as a radio broadcast in "Friday the 13th Part III" says eight bodies were found at the camp, only only eight people at the camp died on-screen. (Paul would have made nine). But ultimately, it's left up to the viewer to decide whether you believe he's alive or dead.

TedStixon

Answer: It's evident that more must have happened after the fade to white as we last see Jason grabbing Ginny, and then later she is found by authorities while Paul is not. One likely possibility is that Paul had intervened and succeeded in freeing Ginny from Jason, but in doing so became a victim himself.

TonyPH