Alright! Randomness it is~! ^_^
Here is the site I used to get the randomized list
https://www.random.org/lists/Original List (Or List A)1. Skylar
2. Mettaton
3. Sans
4. Papyrus
5. Undyne
6. Celes
7. David
8. Chen
9. Aria
Randomized List (Or List B)1. David
2. Skylar
3. Undyne
4. Celes
5. Chen
6. Papyrus
7. Mettaton
8. Aria
9. Sans
Match the number to each list and the results of the Body Swap trap are as follows:
(List A #) is now in (List B #)'s body.
Examples:
(List A #1) is now in (List B #1)'s body. == Skylar is now in David's body.
(List A #2) is now in (List B #2)'s body. == Mettaton is now in Skylar's body.
And so on and so forth. XD