[quote=@Sundrop]
I so badly want to update Cledwynn and add a few things to him, but he's already made so I don't know if I can do that :c
[/quote]

My rule of thumb is if it's already written somewhere people will see, then it's locked in. But if you haven't written it down, anything can/could have happen(ed)~

Failing that, you can have some weird events that can explain a retcon in-universe, like time-travelling paradox or something. Infamous Empath's suggestion is a really hand-wavy example -,-

I'm not against editing your character sheet, by the way. You can add new details and new parts of his backstory and new whatnot whenever, as long as it doesn't contradict current IC.