This is just something I did to add to my mod pack. The opening is just a few seconds long so you will need to edit how long Smash 4 allows the length of the opening to be. I recommended reading this tutorial by Hefty.
Feel free to use it in your modpacks or for whatever you want just give me credit if you are uploading it somewhere.
Also I know the video is weirdly edited and the name tags for each of the characters are big but it was my first time editing videos in a long time so who knows I might remake a better one some day.