So, if you're going to play a campaign of Ghostbusters using the Pulp Alley rules, you're going to need Ghostbusters. Here's my take on the gents.
The Ghostbusters are a League of Legends and so all four are Sidekicks at Level 3. Based on the scenario the leadership of the group will be handed around to whichever Ghostbuster leads the team based on the scenario conditions.
All I need to do now is finish painting off the Zombicide minis for these gents.