In the KR version Meluna was free for everyone, but for global this has been changed to Levi.
Levi has been changed from a 2-star to a 3-star unit and she’s a decent DPS early on. If you don’t plan on making a Depressed team, I would not heavily invested in her.
If you do the beginner missions, on the second day of playing you will get a selector that includes a few units.
In my opinion, Diana feels like the best pick since you get a healer early on you can invest into, but this selector is mostly personal preference.
This is an Eldain selector you get by completing all missions up to the 7th day.
The Korean version includes an extra character, Vivi, which is the best pick but sadly we don’t get her early on.
Since Vivi isn’t on this selector (yet) for us, pick the character of the personality you want to focus on.
All of these units got buffed in the KR version and are pretty good.
We got a discounted beginner banner (700 gems instead of 1,000) that guarantees a character on the last multi and a selector with the same character pool on the 7th day.
This banner is not confirmed yet on global but I assume we’re getting it with the currency from pre-registration rewards.
If you want to reroll, I would do it on this banner rather than the standard one.