Jonas Ackerman is a character from the Grand Theft Auto series who is mentioned on the Epsilon Program website.  Jonas Ackerman resides in Blueberry, San Andreas; and turned to the Epsilon Program to help him in his life. Ackerman had a well paid job and a family, which he abandoned to join the Epsilon Program. He states "Kifflom changed my life. I used to have a well paid job, a family and good prospects. Now, I've given that up to find real meaning in wearing light blue and proclaiming my real religion. Kifflom!" 
Jonas Ackerman's testimony is particularly useful because it gives a hint about the significance of the color light blue in the Epsilon program. Indeed, the buildings of the suspected meeting quarters of the society in the San Andreas map have blue lighting at night, the pedestrians who are part of the society wear blue clothes, the robes themselves are a light blue color (in GTA V) and Jonas Ackerman lives in BLUEberry. This testimony has helped spark a huge social media hunt for the society's secrets back in the San Andreas era.