ドクター(洞窟物語) 伊達冬彦 ダテフユヒコ
The main antagonist for most of [[doukutsu_monogatari|Doukutsu Monogatari/Cave Story]].  He is referred to as [b]"The Doctor"[/b] for almost the entirety of the game; his full name is only given on a statue that is not completed until the player is close to achieving the best ending.
date fuyuhiko