Totem Gate

Totem Gate (トーテムゲート) is a totem enemy with five heads that appears in Mega Man X6. In Ground Scaravich's stage, the Central Museum, there are four blue totems that transport the player to another area, and the player must destroy the Totem Exit to return and fight the Totem Gate. The upper and lower heads attack with shots, and the middle head will fly in the player's direction after two heads are broken, if it isn't broken beforehand. They also appear without their blue portal-forms in the final stages. 

Totem Exit
Totem Exit (トーテムイグジット) appears in the end of the area the Totem Poles from Ground Scaravich's stage sent the player, and must be destroyed to return to the museum.

Trivia
The Totem Gates might not have been chosen at random. For the first one, you either go to the History Area, or the Aquarium Area. For the second one, you go to the second History Area/Aquarium Area. For the third one, you either go to the Space Area, or the Dinosaur Area. For the last one, the second Space Area/Dinosaur Area.