Bob Clones

 were NPCs during the Terwilligers 2015 Event that gave event currency to get prizes. They appeared on the streets of the Player's Springfield and their Neighbors' Springfields. When the player tapped them, they earned event currency. Rewards could be increased by upgrading the Herbicide Squirter.

Rewards
There were two different ways to collect rewards:
 * In the player's own town, they rewarded (before upgrading Herbicide Squirter) :
 * 5, then 3 Gas Masks AND 4 Fertilizer, Corn or DNA during Act 2
 * 3, then 5 Music Notes AND 4 Fertilizer, Corn, DNA or Theatre Masks during Act 3
 * Occasionally, 1 Mutant Seed was added to the above rewards.
 * In their Friends' Towns, they rewarded :
 * Gas Masks or Music Notes for the first 90 actions (1 per action). The rewards in neighbors' towns could be doubled by purchasing the Farming License.

Trivia

 * A maximum of 40 clones could be found in the player's town at a time.
 * One new clone was spawned every 10 minutes.
 * From April 28 to May 6, 2015, before the Level 52 update, a new clone was spawned every 5 minutes.
 * They we're also rewarding 5 Gas Masks at the beginning of Act 2.
 * From May 16 to the end of the event, they rewarded 5 Music Notes like it was at the beginning of the event.
 * The Farming License could be used to double the reward in the player's Friend's Towns.
 * They replaced the Mutant Vegetables from Act 1 of the event.

Skins
appeared in three random skins. However these skins had no difference except for the look.