The title is a bit misleading since it would be more accurate to say these are pre-generated 1st level AL legal characters for use in your Tomb of Annihilation game. However, as a collection of pre-generated 1st level characters, these are great. They provide generous background and reasons to travel to Chult and engage with your adventures.
Sadly, the scanning of the photos, at least in my download, made them orange-blue and weird, it's kinda nice in general, but the quality is atrocious (also, the druid looks like a stripper).
Aside from the picture quality issue, if you're starting a ToA campaign or running ToA games in your local gaming store, this is a very good resource for you.