Davola is noted for stalking Jerry. The incident started in “The Pitch” where they meet him at NBC offices (Davola, a writer, is dropping off a script.) It continues in “The Ticket”, where Jerry and George hid from him in a restaurant. Throughout the fourth season (the season which focused on Jerry’s failed television pilot), Davola appears frequently, including both parts to “The Pilot, Part 1″ and “The Pilot, Part 2″. In the first part, both Jerry and George attempt to hide, but are seen by him when they were leaving for NBC. In the final part, he is noted for saying “Sic semper tyrannis!” (incorrectly translated by Jerry as, “Death to tyrants”) and then jumping off the stands into the set in an attempt to attack Jerry. Davola’s action is reminiscent of John Wilkes Booth, the assassin of Abraham Lincoln.

Elaine once dated Davola’s doctor; also she inadvertently dated Davola while trying to break up with the doctor. When Elaine finds out that Davola is the same “Crazy Joe Davola” that Kramer and Jerry are running from, she also becomes a target.

Davola blames all of his problems on Jerry (even simple inconveniences like a stray hair on his mouth) and even attacked Kramer, who didn’t invite him to a party he was having. Kramer survived a kick to the head because he was wearing Newman’s helmet. The helmet was acquired by Kramer in a trade in which Newman received Kramer’s radar detector (which turned out to be broken).

Davola is also in exceptional shape. He keeps himself fit by lifting weights (while crying) and in one scene uses martial arts to defend himself from hooligans in the park.