Scott Wolden appeared in the episode "The Tale of Old Man Corcoran". It is unknown who portrayed him.
Scott either died from illness or injury, or he may have been lured into an open grave by Marshall McClain, and buried alive. The grave was dug by the Groundskeeper, Old Man Corcoran. Also buried in the graveyard was Marshall McClain, Ron Jacobson, Laura Ayers, Mary Alice Reardon and Cissy Vernon. Their ghosts would all wander around and haunt the graveyard at nighttime. Usually playing hide and seek, possibly he and the rest of them became evil and vengeful ghosts looking to take other people down with them.
It is unclear how long ago he passed away and when he joined Marshall's group. Then in 1993, Marshall invited the new kids on the block: Jack and Kenny Harris to join the group.
Unlike the rest of his friends, he is quiet and never really speaks. He listened to Cissy who was cold and unfriendly to Jack and Kenny, she tried to scare them off by telling them a tall tale about Old Man Corcoran. Cissy told them that once Old Man Corcoran caught a child stealing from him and as a punishment, he cut the child's hand off. Also the Harris boys were told that Old Man Corcoran he was an evil ghost who haunted the graveyard, and is always on the lookout for trespassers.
He didn't know that during their hide and seek game, that Jack and Kenny really did end up bumping into Old Man Corcoran and ran home scared out of their skin. The next day he watched and observed all of his friends tease the Harris boys for chickening out of the game from the other night.
Marshall gave Jack and Kenny another chance to take part in a new hide and seek game. Then during the game, Jack and Kenny snuck away to steal Old Man Corcoran's harmonica to prove him and that others, that Old Man Corcoran really did exist. It is unclear where he went during the game. However it can be assumed that he just vanished and returned to his grave.
Eventually it was proven that everything bad and negative that was told to Jack and Kenny Harris about Old Man Corcoran was all a lie. Because Old Man Corcoran showed up just in time to prevent Jack and Kenny from being buried alive by Marshall!