DaruniaTheGoron is an old-school B8er from back in the 2002 era who still posts on the board from time to time. Board 8 is his hometown board; he was brought to GameFAQs by being linked to the Mario vs Cloud match. He was a member of the now defunct Hylian Knights. His main B8 activity these days is centred around AlecTrevelyan006's managing style Board 8 Baseball League, where his team won the inaugural World Series. His team also reached the World Series in the second season but lost in 7 games to ExThaNemesis.
Outside of the B8BL, Darunia mostly keeps to and regularly posts in the Stats topics during contest season. He is in the school of thought of x-stats being important, but 4-way x-stat rankings are mostly meaningless and just a guide to see how much characters have fallen off.
Besides Board 8, Darunia sticks to LUE (and LUELinks), the Halo: Combat Evolved board, and the NHL board.
The biggest mistake you could make is to confuse him with DaruniaTheKing, who is a totally different guy. Totally. Pretty big coincidence though.