Criminals

 were a NPC's available during the Superheroes 2015 Event. They appeared on the streets of the player and their neighbors' Springfields.They gave event currency to get prizes. Tapping them, yielded Carbon Rods during Issue 1, Pie Bombs on Issue 2, and Freeze Rays during Issue 3. Additionally, they had 20% chance to drop Arbitrarium and once The Collector Pt. 3 a 10% chance to drop Lockpicks was added.

Superheroes 2016 Event
returned in the Superheroes 2016 Event once the player Orphan Alley Pt. 3. They every 5 minutes until a maximum of 30  reached; additional spawns  added to a bank with a capacity for another 30. This effectively a town go full after 5 hours  passed.

Tapping on them prize track currencies and crafting currency varying in amount depending on the issue; additionally they  a 3% chance to drop Sciencewater during all issues.

The following chart shows the rewards from tapping criminals on the player town,

On neighbors' towns they event currencies for the first 50 actions as detailed in the chart below; purchasing the Sequel Squad Membership  the amounts.