Build a simple Unity 3D script

I'm currently building a clicker game, many caracters will be moving on the screen. At the end of each movement I want them to have a quick little move like the video I joined here. I want you to build me a Unity 3D script that will make any caracters quickly move like the video joined. (Look at the last DNA caracter moving down the screen 2 seconds before the end of the video to see the quick move).