Board Thread:Video Game Discussions/@comment-26976647-20150912020642/@comment-3367060-20150912154624

That's a silly question. It's just because they didn't add them. It's as simple as that. But you're actually very wrong on Manda and Anguirus not being in the game, because they were.

Manda was in the game as a regular enemy.

Anguirus was scrapped but still exists in the game.