The following are known Action Replay Codes for Despicable Me: Minion Mayhem on Nintendo DS (NDS).

Game ID: BDWE-03FE160A

Make Minion Stop (Press L)
94000130 fdff0000
6219fc38 00000000
b219fc38 00000000
10000454 00000000
d2000000 00000000

Make Minion Walk (Press R)
94000130 feff0000
6219fc38 00000000
b219fc38 00000000
10000454 00000001
d2000000 00000000