I need help with Gui for cutscene like PBB?

If the title wasn't clear which it probably isn't, I want to.make a cutscene like the ones in Pokemon Brick Bronze(rip og Pokemon Brick Bronze) when you're doing a pokemon battle but if another player comes it looks as if your standing still to them, I thought of spamming Images but that would cause lag and it doesn't make it so you're the player in the images, I know this isnt a script request site, but i've thought of literally everything and not a single good idea has come into my head, if you need more insight just ask through the comments and I'll try to answer it the best I can