Dan, whose birth name was Hideo Murata was best known for his role as Hideki Go/Ultraman Jack in the Return of Ultraman TV series, a role he reprised in multiple appearances in the Ultraman franchise. His last major role was in Kishiryu Sentai Ryusoulger as the Ryusoul Tribe Elder. From all of us here, thank you for the memories.
[Source: Yahoo! News]