Help me edit text?

https://gyazo.com/cb6b6237e3a7b8a6721dfbae2962706f

I'm trying to figure out how / where to find this text in the game, and edit it out. For purposes :DD

When trying this guide by Achilles (http://smashboards.com/threads/how-to-change-the-default-character-names-that-appear-on-the-character-select-portraits.357482/) I figured that that string of text wasn't in the extracted dol given by GC-Tool.

Any ideas would be dopium