Much like his father, he is an archaeologist pursuing treasure in the ancient ruins of Egypt. Too busy investigating, he never knew the place was full of living Mummies and Dog Mummies. He is seen researching some hieroglyphs with a magnifying glass. If the player doesn't kill the Mummies around him in time, they will convert him into a mummy. If the player kills him in his mummy form, he will drop a red jewel.
In Metal Slug Attack, he has a daughter named Scotia Amundsen. Her role in the story is exploring the world for treasure and searching for him. Scott appears in the Customize Unit menu as the Action button, and tapping on it displays the units' various attacks and their character descriptions.
- After meeting Rumi, the player can find a dead explorer that will give the Arabian Tears. Collecting it or shooting him too many times will cause him to pull out an explosive destroying himself and any player in range. It is unknown if he has any relationship to Scott Amundsen Jr. (who appears later in the temple).