A member of the Fairy Tail guild.
Not much is known about this minor character. Interestingly, he does not appear during the Dragon Egg story (Episode 20) where young Natsu and the others celebrate Happy's birth. It's assumed that he join the guild after that event.
Warren Rocko, who is created by Hiro Mashima, has no current information regarding any inspiration used by the author to create him. He first appears in Fairy Tail volume 2 and episode 2. His Japanese voice actor is Daisuke Kageura, and his English voice actor is unknown.
Warren Rocko has the power of telepathy. He can link everyone's mind into a telepathic chat room where everyone speaks to everyone.
Welcome to Fairy Hills!! (OVA)
This is the first Fairy Tail OVA (OAD) in the franchise.