Click element, to change buttons [HELP]

Hey all!

I have 5 characters on my home screen, each character when clicked, should reveal 3 buttons each. I need to change the text of these 3 buttons, for each character. Is there an economic way around this?

I don’t want to make 15x buttons with messy interactions to show and hide them all. Take a look at my link.

Thank you!

Here is my public share link: