Alex Carson, a.k.a "Zenthral_Zen" is a frequent OLR listener and has been dubbed the biggest "word-of-mouth" listener as well. He helped OLR obtain over 100 "fans" on their Facebook page in on hour by sending over 700 fan suggestions to his contacts, getting him mentioned on the show.
Zen was originally known as "Anthral". Then he thought he needed to "spice it up". So he then changed it to "AnthralSkate". After a year of THAT name, he felt that he needed something "scarier". So he went with "Zenthral". Then to "ZenthralZen". And finally to "Zenthral_Zen".