Dr. Fetus, obvious by his name, is a small fetus in a jar and the main villain of Super Meat Boy. For some odd reason, nobody likes him and he doesn't like them, either. It is also common for Dr. Fetus to usually flip off Meat Boy, like in the pause menu, the loading screen for the Dark World map, and also does it in the opening cutscene. He beat up Meat Boy and kidnapped Bandage Girl, which means Meat Boy needs to save her. When Meat Boy catches up to Ban Dark world battle. Contains commentary by Northernlion.dage Girl, it only ends up with Dr. Fetus kidnapping Bandage Girl and teleporting somewhere else. According to the blog, the animations for Dr. Fetus kidnapping Bandage Girl again are based on other games, like the Hundred-Hand Slap, a move from Street Fighter used by the character E. Honda.
Through the use of developer mode a player can choose to play as Dr. Fetus. He features the special ability of throwing missiles and has the same movement as Meat Boy.
It should be noted that, in the manual that comes with the Ultra Edition of Super Meat Boy, there are diary entries that say "Keith fetus 8.14.96. It is possible that Keith may be the first name of Dr. Fetus. His Twitter account also shows his name as Keith Fetus.
Dr. Fetus makes an appearance in Binding Of Isaac in one of the endings.Some fans believe that Isaac may be Dr. Fetus.
Dr.Fetus makes an appearance in Super Tofu Boy,Where he is seen confessing to bandaid girl and tofu boy that he put hormones on meat boy so he could act so violently.
As shown in a few comics, Dr. Fetus fiercly hates Meat Boy and kidnaps Bandage Girl to lure him through extremely dangerous paths.
His boss battle in the Dark World first starts with Dr. Fetus trying to hit the player with a homing rocket launcher. The player must run from Dr. Fetus, avoiding the plethora of saws, bottomless pits, and Dr. Fetus' missles. Then the player is trapped in a room with Dr. Fetus. There is a switch at the top of the ceiling. The player must dodge the missles shot from Dr. Fetus and hit the button. Then the player must run into another room and the floor will collapse, resulting in Dr. Fetus falling into a pit. When he lands, his glass jar will break. He will press a button, causing "his castle" to start falling apart. Then the player must go all the way back through the level with Bandage Girl and survive to beat the boss. During this cutscene and the cutscene for world 4 he kills Meat Boy a total of 3 times making him have the second highest killcount for scripted player-character deaths in video games (first is Valdimir Makarov from the call of duty franchise)