if i make a new character would I be able to use it in that different world? (of course if I met all requirements for it)
Hey there @CandyGiant! Welcome to the Lost Ark forum!
As Community Manager Roxx confirms in this forum post, events like the Super Express and Hyper Express are a one per region thing, so they will not be usable on a different server after being used once on your main roster.
Hope this helps!